Fixed a crash when calling GetType() through a boxed Nullable<T> that has no value, in generic code built with Faster (smaller) builds.
Release Notes Search
Search changes, fixes, and known issues across Unity releases.
Fixed a security vulnerability (CVE-2026-111497) in the Brotli decoder used by System.IO.Compression.BrotliStream and BrotliDecoder, where decoding untrusted data could allow remote code execution.
IL2CPP
Fixed an IL processing issue in generic code that caused a "No support for assigning to/from variable size types and concrete types" exception at build time.
Fixed case of FMA not being reported as available and case of AVX2 flag not being set in some cases.
IL2CPPFix
Fixed crash on startup with the deep profiling support enabled.
Linked bug report
UUM-145576: Application crashes immediately after launch when Autoconnect Profiler and Deep Profiling Support are enabled in Build Settings
When "Development Build", "Autoconnect Profiler", and "Deep Profiling Support" are enabled in the Build Settings, performing a "Build And Run" causes the application to crash immediately upon launch. Steps to reproduce: 1. Create a new project using the Universal 3D Template 2. Enable "Development Build", "Autoconnect Profiler", and "Deep Profiling Support" in the Build Settings 3. Set the Scr…
Retrieved 2026-11-09Fixed GC marking on InlineArray types
IL2CPPFix
Fixed issue where memory from a thread object could be kept alive by the GC past its exit
Linked bug report
UUM-149541: Memory from the last exited managed thread is not freed when IL2CPP is used
How to reproduce: Open the attached project “IN-150912” Ensure that IL2CPP is selected as the Scripting Backend in “Project Settings → Player → Other Settings” Build and run the project Press ‘Space’ in the Player Observe the payload status text at the top of the Player Actual result: Payload 3 shows “alive = True” Expected result: Payload 3 shows “alive = False” Reproducible with: 6000.0.0f1,…
Retrieved 2026-11-10Fixed missing incremental GC write barriers on static and ThreadStatic fields on ref struct types.
Linked bug report
UUM-153622: IL2CPP: no write barrier is emitted when a reference is stored into a static or [ThreadStatic] field declared on a ref struct, so the object is freed under incremental GC while the field still points at it
Steps to reproduce: 1. Download and extract the attached user's project "il2cpp_ts_repro.zip" 2. Build the Windows x64 player by running "Unity.exe -batchmode -nographics -quit -projectPath <project> -executeMethod BuildRepro.Build -logFile build.log" 3. Open "Repro\il2cpp_ts_repro.sln" Visual Studio solution, Build it and wait for the Player to exit (about 10 seconds) 4. Observe the exit code…
Retrieved 2026-11-10Fixed segmentation fault on OSX and Linux while running IL2CPP.
Fixed typo checking VAR twice instead of MVAR.
Restored IL2CPP's code generation for ldind/stind opcodes to use normal pointer casts instead of memcpy calls.
Fixed case of Advanced Dropdown menus, such as the Build Profiles "Add Settings" dropdown, showing unstyled red items when opened during Play Mode.
Linked bug report
UUM-135953: Style is broken and Red Font is shown in Advanced Dropdown when opening it in Play Mode
Steps to reproduce: Create a new High Definition 3D sample Project from Hub Open the Build Profiles Window Enter Play Mode Right click the Windows Build Profile and select "Copy To New Profile" Click "Add Settings" in the Profile Settings panel Actual results: Dropdown without styling is opened in a red font for it's options, warnings are logged "Unable to find style 'x'" Expected results: Dro…
Retrieved 2026-11-09Fixed case of content in ImguiContainers not reacting to click when partially clipped.
Fixed IMGUI text drawing a few pixels past the borders of enclosing scroll views and containers when the text overflowed its control.
Linked bug report
UUM-150041: List item text in Import Activity window's Overview tab is clipping through the list border
Steps to reproduce: Open the attached project Open the Import Activity window (Window -> Analysis -> Import Activity) Dock the window next to the Game view In the Import Activity window's Overview section, scroll through the Most Dependencies and Longest Import Duration lists Observe the Item text at the bottom of the list Actual results: Item text is clipping through the List's border Expecte…
Retrieved 2026-11-10Fixed IMGUI text fields, such as Transform values in the Inspector, sometimes showing another value's text (for example 0 and 1 swapped) while a window was being resized.
Linked bug report
UUM-147879: Transform property field values constantly swap between 0 and 1 when resizing the window
Steps to reproduce: 1. Create a new project 2. Add a “Cube” GameObject to the scene 3. Make sure its Scale is set to (1,1,1) 4. Make sure the Position and Rotation values are both set to (0,0,0) 4. Start resizing the Inspector from the left side, moving it back and forth 5. Observe the Transform component of the “Cube” GameObject Actual result: Position, Rotation and Scale values jump around f…
Retrieved 2026-11-11Fixed property field child fields not being drawn when the property rect is at negative GUI coordinates.
Linked bug report
UUM-149255: IMGUI fields disappear and interactivity breaks when the rect position drops below zero inside a custom EditorWindow
How to Reproduce: 1. Open the attached “IN-150313” project 2. Wait around 5 seconds for the “Rendering Repro” window to open 3. Observe the “Rendering Repro” window Actual Result: X, Y and Z values of “Vector #1”, “Vector #2” and “Vector #3” are not visible Expected Result: X, Y and Z values of “Vector #1”, “Vector #2”, “Vector #3” and “Vector #4” are visible Reproducible with: 6000.0.0f1, 600…
Retrieved 2026-11-10Fixed text fields not scrolling to keep the cursor visible when typing text longer than the visible field width.
Linked bug report
UUM-149213: Text field cursor does not follow the text when typing a long name in the Project window's rename mode
How to reproduce: 1. Create a new Unity project 2. In the Project window, select an asset and enter rename mode 3. Type a name long enough to exceed the width of the visible text field 4. Observe the text field while typing Expected results: The text field scrolls/follows the cursor so the currently typed character stays visible Actual results: The text field stays anchored at the start of the…
Retrieved 2026-11-10Fixed the text cursor being vertically misaligned in an empty text field.
Linked bug report
UUM-145875: Caret is vertically misaligned on custom Editor windows when using GUI.TextField
Steps to reproduce: 1. Create a new project 2. Import the attached “EditorWindowTemp.cs“ script 3. Open Window → CaretBug 4. Click on the TextField Actual result: Caret is misaligned with the TextField Expected result: Caret is aligned properly Reproducible with: 6000.5.0a3, 6000.5.1f1, 6000.6.0b1, 6000.7.0a1 Not reproducible with: 6000.0.78f1, 6000.3.18f1, 6000.5.0a2 Reproducible on: macOS Se…
Retrieved 2026-11-09Reduced GC allocations when a GUISkin style is assigned during OnGUI.
Linked bug report
UUM-134155: UIElements memory allocations grow when interacting with IMGUI custom Editor window
Reproduction steps: 1. Open the attached project "ReproProj" 2. In Project window click “/Assets/Plugins/Pixel Crushers/Dialogue System/Demo/Data/Demo Database.asset“ 3. In inspector, click Edit to open a custom Editor window 4. Click on the Conversions tab 5. Open Profiler (Window > Analysis > Profiler) 6. Run Profiler in Edit mode 7. Observe GC Alloc of UIElementsUtility.DoDispatch events Ex…
Retrieved 2026-11-09Fixed a regression that added roughly 60 ms to editor project load time when input devices were first detected.
Removed a 17 B main-thread GC allocation that occurred on every input update tick in Mono players.
Added BiasCorrectedGyroscope, reporting angular velocity in radians per second with the sensor bias removed, as the parity equivalent of UnityEngine.Input.gyro.rotationRateUnbiased. The device is present only on platforms that can supply a bias-corrected value, so check BiasCorrectedGyroscope.current for null before using it.
Input SystemFix
Added LocationSensor, exposing GPS position, status, and permission state as the parity equivalent of UnityEngine.Input.location. Reports status via a new Input System LocationServiceStatus enum.
Input SystemFix
Fixed a potential crash when an iOS application shut down with a motion sensor enabled. Pending sensor callbacks could run after the objects they wrote into had been destroyed.
Input SystemFixiOS
Fixed case of Android sensor devices going permanently silent after a device reset. Resetting a sensor released the underlying OS sensor while the device still reported itself as enabled, so no further values arrived and re-enabling it had no effect.
Input SystemFixAndroid
Fixed issue on macOS where third party tools sending repeated key down events without a key up could result in keys becoming stuck.
Fixed misaligned labels in the Input Actions editor properties pane.
Input SystemFix
Fixed polling for interaction phases (such as WasPerformedThisFrame) being missed during Update due to interaction timeouts sometimes occurring during the later before-render period when a before-render device (such as an XR HMD) is added. This means that timeouts and interactions like Hold may now wait to perform until the next frame instead of the earliest chance during before-render.
Fixed the error "type is not a supported string value" that was logged in the Console when viewing binding properties in the Input Actions Editor.
Fixed the iOS sensors backed by device motion so that GravitySensor, AttitudeSensor and LinearAccelerationSensor are each enabled and disabled independently. Enabling one of them previously started all of them, so code that enabled one device and read another now reads default values until it enables that device too.
Input SystemFixiOS
Fixed the Read more link in the Update Mode warning of the Input System settings opening a documentation page that does not describe Update Mode.
This fixes Windows' Xbox Game Bar and macOS overlays (Spotlight et al). On Windows, Steam/Discord/NVIDIA overlays work as always.
Linked bug report
UUM-150045: Keys remain stuck as "pressed" when focus shifts to any overlay
Steps to reproduce: 1. Open attached project “IN-151262” 2. Make sure “Assets/FPS/Scenes/MainScene” is selected in the scene list 3. Enter the Play mode 4. Press "W" to start running forward 5. With "W" still held press ALT + Windows Key + G to bring up the Xbox Game Bar overlay (This works with other overlays as well) 6. Observe the Game view 7. Refocus Unity, press some other keys to except …
Retrieved 2026-11-10Bumped iOS/tvOS minspec from 15.0 to 16.0.
iOSFixtvOS
Fixed a bug where pulling down the iOS Control Center could cause a Unity app to stop playing back audio.
Linked bug report
UUM-145522: Audio is cut out when accessing iOS Control Center
Steps to Reproduce: Open the attached “IN-145955“ reproduction project Build the project for iOS and run it on a physical iPhone Press the Play button and observe that the game audio is playing normally Pull down the iOS Control Center from the top of the screen (this triggers applicationWillResignActive) Dismiss the Control Center by swiping it back up Listen to the game audio Actual Result: …
Retrieved 2026-11-09Fixed a crash when application:openURL or application:continueUserActivity was called before Unity initialized.
Linked bug report
UUM-151801: Application crashes when "application:openURL:options" runs before Engine initializes
How to reproduce: 1. Open the attached “IN-152919” project 2. Open Build Profiles and switch to iOS (File > Build Profiles) 3. Build the project 4. Open the built project in Xcode 5. Deploy to a device 6. Observe the device Actual result: The app crashes at startup Expected result: The app launches successfully to a sample scene Reproducible with: 6000.0.23f1, 6000.0.83f1, 6000.3.24f1, 6000.6.…
Retrieved 2026-11-10Fixed a false "Touch was already deallocated" error on iOS when the app moved to the background.
Linked bug report
UUM-145381: when application is sent to background with active touch error message is printed
Steps to reproduce: Build an empty Unity project with Input System enabled; Run the project on an iOS device; Touch and hold the screen; Send the app to the background; Error message is printed: "Touch was already deallocated" to console; Actual results: when application is sent to background with active touch error message is printed. Expected results: when application is sent to background w…
Retrieved 2026-11-09Fixed App Store validation failing for projects whose minimum OS version is higher than the one declared by the embedded UnityRuntime.framework.
Fixed building UnityFramework directly via command line.
Fixed GameAssembly ignoring the target OS version from Player Settings.
Fixed incomplete privacy manifest when integrating only UnityFramework.framework (Unity as a Library).
iOSFix
Fixed occasional failure to merge render passes with msaa depth on apple gpu family 1-3.
Linked bug report
UUM-147831: Transparent draws (default ZTest) silently fail on devices with an Apple A10 chip and older when Memoryless Depth is set to Forced/Automatic
How to reproduce: 1. Open the attached “IN-148630_memoryless-depth.zip” project 2. Set the Memoryless Depth setting to “Automatic” (Project Settings > Player > Other Settings > Memoryless Depth) 3. Build for iOS 4. Observe the device Actual result: Only the green rectangle is visible Expected result: Both the green and red rectangles are visible Reproducible with: 6000.5.5f1, 6000.6.0b5, 6000.…
Retrieved 2026-11-10Fixed ScrollView not responding to mouse wheel input with a connected mouse.
Linked bug report
UUM-141279: ScrollView does not work when using the mouse wheel
Steps to reproduce: 1. Open the attached “IN-133496“ project 2. Build Xcode project and deploy it to an iOS device 3. Connect a USB or Bluetooth mouse to the iOS device 4. Make sure Settings -> Accessibility -> Touch -> AssistiveTouch is enabled 5. In Player, hover the mouse over the ScrollView and use the mouse wheel to scroll through its content 6. Observe the Player Actual result: ScrollVie…
Retrieved 2026-11-09Fixed shader warmup on older devices (AppleFamily3 and earlier).
Linked bug report
UUM-147933: Xcode crash on "libsystem_kernel.dylib__pthread_kill" on launch when the preloaded Shader Variant Collection warms up on older devices (A10 and earlier GPUs)
How to reproduce: 1. Open the attached “IN-149057_3446176-svc-upgrade-repro.zip” project 2. Confirm that the “Repro.shadervariants” file is included under Project Settings → Graphics → Preloaded Shaders 3. Build for iOS 4. Observe the crash Actual result: The crash occurs Expected result: The crash does not occur Reproducible with: 6000.0.80f1, 6000.3.20f1, 6000.5.5f1, 6000.6.0b5, 6000.7.0a3 C…
Retrieved 2026-11-10Fixed the secondary display mirroring the device screen instead of showing its own camera view on iOS 27.
Fixed TouchScreenKeyboard.area returning an empty rect when the keyboard is open and the project uses the Objective-C trampoline.
Added a JobHandle.ToString implementation to prevent potential boxing.
KernelFix
Fixed a potential deadlock in the job system involving many external threads and manual jobs.
Fixed crash in DomainUnloadAutoFree memory tracker.
Linked bug report
UUM-144552: Crash on DomainUnloadAutoFree::FrameMaintenance during Editor usage
How to reproduce: 1. Create a new Unity project 2. In the Hierarchy, create a new empty GameObject 3. In the Inspector, add the "Shadow Caster 2D" Component 4. Wait 2-3 seconds and click anything in the Editor 5. Observe the crash Reproducible with: 6000.6.0a7 Can't test with: 6000.0.76f1, 6000.3.15f1, 6000.4.8f1, 6000.5.0b9 (One-time crash) Reproducible on: macOS Tahoe 26 (M1) Not reproducibl…
Retrieved 2026-11-09Fixed crash in NativeSlice caused by 32bit integer overflow.
Fixed crash in UnsafeList::RemoveRange() if count overflows a 32bit integer.
FixedString operator==(String) threw ArgumentException when the string exceeded the FixedString capacity.
Linked bug report
UUM-129279: ArgumentException is thrown when comparing FixedString64Bytes with a String where the FixedString64Bytes is on the left-hand side of ==
Reproduction steps: 1. Open the attached “BugRepro” project 2. Open the “Assets/test.unity“ Scene 3. Enter the Play Mode 4. Observe the Console window Expected result: No errors are thrown Actual result: “ArgumentException: FixedString32Bytes: Truncation while copying….” error is thrown Reproducible with: 2.5.7, 2.6.0-pre.4 (6000.0.56f1, 6000.2.2f1, 6000.3.0b1) Reproducible on: Windows 11 Not …
Retrieved 2026-11-09Windows standalone players crashed immediately on startup on CPUs without SSE4.2 support.
Linked bug report
UUM-155744: Windows Standalone Player silent crash on launch when using Legacy x64 CPUs without POPCNT support
How to reproduce: 1. Create and open a new project 2. Build and Run for Windows 3. Observe the Player Alternative reproduction (using Intel SDE): 1. Install Intel Software Development Emulator 2. Create and open a new project 3. Build the project for Windows 4. Open Command Prompt 5. Run the following command in cmd: "PATH_TO_SDE\sde.exe" -mrm -chip_check_call_stack 1 -chip_check_call_stack_de…
Retrieved 2026-11-11Bump ProxyHelper version to allow running on case-sensitive filesystem.
Linked bug report
UUM-155895: Fails to launch when installed on case-sensitive APFS on macOS
How to reproduce: 1. Format a volume as APFS (Case-sensitive) 2. Install Unity Editor on this volume (if a Unity Editor is already installed on another volume, it can be just copied to the new volume, otherwise, install through Unity Hub) 3. Launch the installed Editor 4. Observe that the Editor immediately terminates Actual result: The Editor fails to start Expected result: The Unity Editor l…
Retrieved 2026-11-11LicenseUUM-155895
Fixed the license error dialog looping on Retry and close when two Editors of the same version required incompatible Licensing Client versions.
LicenseUUM-153121
Fixed a crash on Linux when running without an initialized video subsystem, such as in batch mode with -nographics or without a display.
Linked bug report
UUM-156559: Crash on PlayerMain when running a Linux Player with "-batchmode -nographics" without an X11 or Wayland display
How to reproduce: Open the attached "IN-155827_repro" project Build the Player for the "Linux" platform On Linux, run the built Player with the "-batchmode -nographics" arguments and without access to an X11 or Wayland display (for example, run it with "env -i HOME=$HOME XDG_RUNTIME_DIR=<empty directory> ./<Player>.x86_64 -batchmode -nographics") Observe the crash Reproducible with: 6000.0.20f…
Retrieved 2026-11-11Fixed a crash on Linux when the Editor was launched with -nographics but without -batchmode; the Editor now reports the invalid arguments and exits with code 1.
Linked bug report
UUM-154576: Editor crashes on a GtkStyleContext assertion when running -upmPack with -nographics and without -batchmode
How to reproduce: 1. Extract the attached "Repro_UpmPackCLI" 2. Run "./repro_bug2.sh <editor binary> <any project path>", which creates the project if it does not exist and runs the case twice, once with DISPLAY inherited and once with DISPLAY unset 3. Observe the process exit code and the log Expected results: The Editor rejects the argument combination and exits cleanly with a non-zero exit …
Retrieved 2026-11-11Fixed an issue where D-Pad inputs mapped to the wrong directions when using a wireless Xbox 360 controller on newer Kernel versions.
Linked bug report
UUM-136083: D-Pad inputs map to wrong directions when using a wireless Xbox 360 controller on newer Kernel versions
Reproduction steps: 1. Open the attached “IN-135212” project 2. Open the “Scenes/SampleScene” Scene 3. Enter the Play Mode 4. Press the D-Pad buttons “Up”, “Down”, “Left” and “Right” 5. Observe the Console window Actual result: Logs show “Up” is “Left”, “Down” is “Right, “Left” is “Up” and “Right” is “Down” Expected result: All the outputs match the buttons pressed Reproducible with: 1.2.0, 1.…
Retrieved 2026-11-09Fixed bugs when building Windows Players and creating Visual Studio Solutions from Linux Editors.
Linked bug report
UUM-140187: Building for Windows throws "AgilitySDK dll could not be retrieved" when "Create Visual Studio Solution" was enabled before switching build platform to Windows
How to reproduce: Create and open an empty 3D URP project Go to File -> Build Profiles (Shift + Ctrl + B) Select Windows platform Enable “Create Visual Studio Solution” checkbox Click the “Switch Platform” or “Switch Profiles” button Click the button “Build” → build to any location Observe Console window Actual result: Build fails Expected result: Build completes successfully Reproducible with…
Retrieved 2026-11-09Fixed case where first touch input is dropped.
Fixed Linux Player file extension stacking when building Linux Player from Mac Editor.
Fixed some Xbox controller inputs are mapped to different buttons than they should be in Unity Input System when the controller is connected through Bluetooth on Linux.
Linked bug report
UUM-144216: Some Xbox controller inputs are mapped to different buttons than they should be in Unity Input System when the controller is connected through Bluetooth on Linux
How to reproduce: Connect the Xbox controller via Bluetooth Create a new project with the “Universal 3D” template Install the Input System package in the project Open Window > Analysis > Input Debugger Open the “Gamepad” device by double-clicking it Press the left shoulder button on the controller Observe the “Value” column Actual result: Value is 1 in the row with the name “Select” Expected r…
Retrieved 2026-11-09Fixed the Editor hanging on the splash screen when a dialog opened while a scene was loading.
Linked bug report
UUM-151324: Editor hangs on the splash screen when a file required to restore the last-opened scene fails to open on startup
How to reproduce: Open the attached “IN-150360-repro-deadlock” project Open the “HeavyScene” Close the Editor Make a file required by that scene unreadable, e.g. run "chmod 000" on the scene file (HeavyScene.unity) Open the attached project again Actual result: The Editor freezes on the splash screen and a window titled "Opening file failed" is created but never painted or clickable, placed at…
Retrieved 2026-11-10Fixed the splash screen not fading out smoothly on start.
Lowered the glibc version to 2.34.
Fixed a crash on recent macOS versions that could occur when importing X.509 certificates.
Fixed a top-level menu returning to the wrong position in the menu bar after being removed and restored.
macOSFix
Fixed libMonoPosixHelper.dylib not being found in macOS server builds.
Linked bug report
UUM-141263: MacOS server cannot find libMonoPosixHelper.dylib when calling GZipStream
Steps to Reproduce: Open the attached “IN-141389“ project Run the Menu Item “Build > Mac Server” Find the Server in “/Builds/Server/TestServer/3275586” and Run it by simply opening it Observe the Terminal Actual result: a “DllNotFoundException: libMonoPosixHelper.dylib assembly:<unknown assembly> type:<unknown type> member:(null)” exception is thrown Expected result: No DllNotFoundException ex…
Retrieved 2026-11-09Fixed macOS Dedicated Server builds using CoreCLR failing to launch because the CoreCLR library could not be found.
Fixed the Editor slowing down in batch mode and automated test runs on macOS when one of its windows lost focus.
macOSFixWindows
Fixed the macOS Editor ignoring internal tick requests while its window was unfocused, which made async and coroutine-based execution run slower than when focused.
Fixed the splash screen not fading out smoothly on start.
Fixed the standalone player window title not using the localized application name.
Fixed a security vulnerability (CVE-2026-111497) in the Brotli decoder used by System.IO.Compression.BrotliStream and BrotliDecoder, where decoding untrusted data could allow remote code execution.
Mono
Fixed race condition during interface initialization on ARM64.
Stopped a crash when using a default GCHandle
Linked bug report
UUM-153835: Crash on "ves_icall_System_GCHandle_GetAddrOfPinnedObject" when calling "GCHandle.AddrOfPinnedObject()" on a default-initialized GCHandle
Reproduction steps: 1. Open the attached "IN-154843" project 2. In the menu bar, navigate to "Bug" > "Crash Editor" 3. Observe the crash Reproducible with: 6000.0.0f1 (7bea50d699a2), 6000.0.84f1, 6000.3.25f1, 6000.6.3f1, 6000.7.0b3, 7000.0.0a1 Reproducible environment: Ubuntu 24.04.5 LTS, Windows 11 (Reporter) Not reproducible environment: No other environments tested Workaround: Check "GCHand…
Retrieved 2026-11-10Console error logged when deleting the active Play Mode Scenario.
Linked bug report
UUM-144445: “Multiple instances of EditorPlayModeGuard detected. There should only be one instance.” error is thrown when deleting a default Play Mode Scenario and selecting another one as the default
Reproduction steps: 1. Create a new project 2. Install Multiplayer Play Mode package (Window > Package Management > Package Manager) 3. Click on “Default Play Mode” button and select “Configure Play Mode Scenarios” option to open Play Mode Scenarios window 4. Create two new Play Mode Scenarios 5. Select one of the newly created Play Mode Scenarios as the default one 6. Open Play Mode Scenarios…
Retrieved 2026-11-09Deleting an activated virtual player from the scenario configuration removed it from the config without stopping the running instance, leaving it orphaned.
Editor crash when the GPU Resident Drawer is enabled and a cloned object's rendering components were stripped by the Dedicated Server role.
Linked bug report
UUM-147692: Crash on ``anonymous namespace'::ParallelCollectInstancesAndTransforms'::`2'::CollectInstancesAndTransformsJobData::ExecuteJob when Asset is updated with Multiplayer Server Rendering Component stripping during Play mode
How to reproduce: Open the attached “IN-147868” project Open the “SessionBootstrap” scene Make sure the Vivox service is set up Activate the GPU Resident Drawer (In the “PC_RPAsset” set “GPU Resident Drawer” to “Instanced Drawing”) Enable Rendering Component stripping and “Apply” (Edit > Project Settings > Multiplayer > Multiplayer Roles > Server > Strip Rendering Components) Select “Step 2 - …
Retrieved 2026-11-09Editor window layouts loads a broken "Failed to load" Multiplayer Play Mode window and throws a NullReferenceException when docking around it in projects where Multiplayer Play Mode is not enabled or its package is not installed.
Linked bug report
UUM-146870: Editor window layout opens invalid "Failed to load" windows
Steps to reproduce: Create a new project Load the attached layout via Layout -> Load Layout from File... Observe the open windows Actual results: "Failed to load window" is displayed. Interacting with the window (Docking another window next to it, or redocking the affected window elsewhere) can lead to the window panel no longer being rendered and NullReferenceExceptions being thrown. This req…
Retrieved 2026-11-10Fixed a NullReferenceException thrown when the Launching Scenario window is opened without an active scenario, which left the window empty.
Fixed a NullReferenceException that occurred when activating an Additional Editor Instance for the first time from a custom Play Mode Scenario.
Linked bug report
UUM-148037: "FallbackEditorWindow" warning and "NullReferenceException" error is thrown when activating an Additional Editor Instance for the first time via custom Play Mode Scenario
Steps to reproduce: Create new project Install Multiplayer Play Mode package from the Package Manager (com.unity.multiplayer.playmode) In the Toolbar, click on the "Default" dropdown next to Play mode icons Click "Configure Play Mode Scenarios" Click "+" to create new scenario Click "+" under "Additional Editor Instances" to add Player 2 Click again on the "Default" dropdown and select "Activa…
Retrieved 2026-11-10Fixed an issue where error messages were thrown when selecting the Prefab submenu option on a GameObject in the clone players' Hierarchy window by removing the Prefab interactions on all Clone players.
MultiplayerFix
Fixed errors thrown when using Terrain tools in Multiplayer Play Mode additional Editor instances Authoring tools are not supported and are now disabled.
Fixed missing sample IDs for the Competitive and Turn-Based Multiplayer Center QuickStart genres, and made the sample README reliably selected and pinged after import.
MultiplayerFix
Fixed scrolling so it now works correctly when the cursor hovers over the Complexity bar.
MultiplayerFix
Fixed the Focus on Player option in the Multiplayer Play Mode window staying enabled and doing nothing when the player is not active.
Fixed the install button so it no longer displays "Installing package(s)..." after users cancel the install dialog.
MultiplayerFix
Fixed the scaling artifacts of the Multiplayer Center window's genre titles in Bitmap rendering mode.
MultiplayerFix
Fixed virtual players crashing when the main editor is closed on Ubuntu.
MultiplayerFix
Multiplayer PlayMode clone editors now adhere to the Hierarchy window version preference. When switching between Scene Hierarchy and the new Hierarchy window in the main Editor, it is now automatically reflected across all active clones.
MultiplayerFix
On sample import, the scene that opens is now the initial scene named by the sample's play mode scenario instead of a fixed file name. Samples whose scenario names no scene, or names one outside the sample, keep the current scene open and log a warning.
MultiplayerFix
Play Mode button remaining highlighted after canceling the Unsaved Changes prompt when entering Multiplayer Play Mode.
Removed the Tree creation option from the hierarchy menu to prevent asset creation in Multiplayer Playmode Virtual Players, as asset authoring is forbidden.
Unity Transport: Correctly recreate UDP sockets on iOS when they are closed by the OS when an application is in the background for a while. Prevents a condition when the driver seemingly stops receiving packets.
Linked bug report
UUM-153993: Unity Transport UDP NetworkDriver stops receiving packets when the application resumes after device sleep
How to reproduce: Open the attached "IN-153250" project Open the "SleepWake" scene Enter Play mode In the Game view, click Start Server with UDP port 7777 Build the same project for iOS Open the "Unity-iPhone.xcodeproj" in Xcode Build to a mobile device on the same LAN and allow Local Network access On the mobile device, type the desktop's LAN IPv4 address and port 7777, then tap Connect Obser…
Retrieved 2026-11-10Unity Transport: Fixed a memory leak when closing connections using DTLS or TLS.
Linked bug report
UUM-151755: Memory leaks when destroying a TLS client in Unity Transport
How to reproduce: 1. Open the attached “IN-152098” project 2. Download the Memory Profiler package 3. Open Window->Analysis->Memory profiler 4. Select “Capture New Snapshot” 5. Open Window->General->Test Runner 6. Run the “UnityTlsServer_DestroyClientLeak” test 4-7 times 7. Repeat steps 3-4 8. Compare the two snapshots Actual result: Destroying a TLS client doesn't fully free the memory it all…
Retrieved 2026-11-10Unity Transport: Fixed an issue where sending packets on UDP connections that don't have a remote peer anymore could eventually result in exhausting the receive queue, causing the server to not be able to receive anything anymore.
Unity Transport: Fixed an issue with the NetcodeInterop layer which would cause connection failures when using NGO transports that use a single buffer for all receive operations (for example the community Facepunch transport does this).
Unity Transport: Network interfaces are now automatically disposed of before domain reloads. Without this protection, socket handles could be leaked which would cause errors when trying to re-bind to the same port later on. Note that this isn't a replacement for properly disposing of NetworkDriver objects; it's only a protection in cases where that's not done.
Linked bug report
UUM-146443: Unity Transport UDP socket is not released when a domain reload interrupts the session
Steps to reproduce: 1. Create a new project 2. Install the com.unity.netcode.gameobjects package 3. Import the “Bootstrap” sample 4. Open the “Boostrap” scene 5. Enter Play Mode 6. Press on “Host” in the Game View 7. Edit any script so a domain reload happens (can just add a letter to a comment) 8. Exit and Enter Play Mode 9. Press on “Host” 10. Observe the Console window Actual result: “Faile…
Retrieved 2026-11-09Disabling known failures on UGK CI.
N/A \(internal\)Fix
Fixing configuration deletion issue
N/A \(internal\)Fix