Networking issues

1–25 of 53

Filtered slice of every tracked UUM id — adjust the chips to widen or narrow.

IssueStatusDescriptionIntroducedFixedDays open Mentions
UUM-150958FixedNetworking: Fixed UnityWebRequest cookies occasionally reverting to an older value when a slower request completed after a faster concurrent request to the same host had already set a newer cookie.—6000.6.4f1Oct 1, 2026—1
UUM-151802FixedNetcode for Entities: Ensure NetworkStreamDriver.Disconnect disconnects the connection from the correct driver. Prior to this fix, it would only disconnect from the first driver in the store, which might be the wrong one.—6000.6.3f1Sep 24, 2026—1
UUM-151643FixedNetworking: Fixed a freeze when quitting a standalone player while an ongoing request was still resolving DNS against an unresponsive or slow DNS server.—6000.7.0b2Sep 23, 2026—2
UUM-150583FixedNetworking: Fixed issue where UnityHttpMessageHandler requests would never complete (and could not be cancelled) when the HTTP response had an empty body. (UUM-150583).—6000.7.0b1Sep 17, 2026—3
UUM-151263FixedMultiplayer: Multiplayer Play Mode additional Editor instance keeps running outdated script code when domain reload is disabled (UUM-151263) First seen in 6000.7.0a6. Fixed in 6000.7.0b2.6000.7.0b1Sep 17, 20266000.7.0b2Sep 23, 202652
UUM-146631FixedNetcode for Entities: Fixed issue with a ghost prefab having multiple ghost prefab entity instances, such as when it is baked into multiple loaded subscenes. When loading, unloading and reloading the subscenes the ghost collection prefab would point to a prev…—6000.6.1f1Sep 16, 2026—3
UUM-148239FixedMultiplayer: Fixed errors thrown when using Terrain tools in Multiplayer Play Mode additional Editor instances Authoring tools are not supported and are now disabled.—6000.7.0a6Sep 3, 2026—3
UUM-148863FixedNetcode for Entities: Styling of several elements of GhostAuthoringInspectionComponent no longer conflicts with light theme default editor styling. This caused some elements to be barely visible or entirely unreadable (UUM-148863).—6000.7.0a6Sep 3, 2026—3
UUM-149745FixedMultiplayer: Fixed an error thrown when activating an Additional Editor Instance through a custom Play Mode Scenario. (UUM-149745) First seen in 6000.7.0a5.—6000.7.0a6Sep 3, 2026—1
UUM-149873FixedMultiplayer: Play Mode button remaining highlighted after canceling the Unsaved Changes prompt when entering Multiplayer Play Mode.—6000.7.0a6Sep 3, 2026—3
UUM-131597FixedNetcode for Entities: Issue where predicted ghosts - that changed archetypes multiple times (often moving back to their original archetype) - would mispredict, particularly on partial ticks. Also fixed this issue with enable bits and child components.—6000.7.0a5Aug 20, 2026—4
UUM-144540FixedNetworking: De-referencing invalid texture pointer when a webrequest is teared down abruptly.—6000.6.0b9Aug 18, 2026—10
UUM-147347FixedNetworking: Fixed a possible editor-only crash when using a custom certificate handler with UnityWebRequest in long editor sessions involving many domain reloads.—6000.6.0b9Aug 18, 2026—10
UUM-148037FixedMultiplayer: Fixed a NullReferenceException that occurred when activating an Additional Editor Instance for the first time from a custom Play Mode Scenario.—6000.6.0b9Aug 18, 2026—8
UUM-147692FixedMultiplayer: Editor crash when the GPU Resident Drawer is enabled and a cloned object's rendering components were stripped by the Dedicated Server role.—6000.6.0b8Aug 12, 2026—10
UUM-131602FixedNetcode for Entities: A ghosted FixedList - that is cleared and later repopulated with the same data (e.g. during prediction rollback) - now replicates correctly.—6000.5.6f1Jul 29, 2026—12
UUM-146870FixedMultiplayer: Editor 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. (UUM-14…6000.7.0a3Jul 23, 20266000.5.7f1Aug 5, 20261214
UUM-144445FixedMultiplayer: Console error logged when deleting the active Play Mode Scenario.—6000.6.0b5Jul 22, 2026—13
UUM-146443FixedMultiplayer: 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 replace…—6000.6.0b5Jul 22, 2026—13
UUM-144767FixedNetworking: Fixed an issue in UnityWebRequest where an error 26 or 65 ("necessary data rewind was not possible") would sometimes be logged when resuming upload requests.—6000.6.0b2Jul 1, 2026—20
UUM-145433FixedNetworking: Fixed a situation where Curl errors coming from UnityWebRequest could fail to be logged appropriately, making issues harder to debug. Note that even in this situation the failure would still be reported correctly to calling code. This bu…—6000.6.0b2Jul 1, 2026—19
UUM-141106FixedMultiplayer: Fixed an issue where some labels in the Multiplayer Center were truncated.—6000.6.0b1Jun 23, 2026—11
UUM-131598FixedNetcode for Entities: Switched usage of 'PlayMode' to 'Play Mode' to be more consistent with other areas of the menu.—6000.6.0a7Jun 11, 2026—13
UUM-141084FixedMultiplayer: Fixed an issue with tab highlights in the Multiplayer Center window.—6000.6.0a7Jun 11, 2026—12
UUM-135025FixedNetworking: Fixed a parsing bug when multiple proxies are returned by PAC script and only uses the first entry in the proxy failover chain.—6000.6.0a5May 13, 2026—21
Where the numbers come from
  • Editor releases ingested 4h ago · package versions ingested 4h ago.
  • Net-fix (the heat strip) = fixes − known_issues per release — a raw difference, no weighting. The 0–100 build score shown elsewhere is a separate, documented formula.
  • Issue lifespan = first Known Issues mention → first Fixes mention, joined on UUM-id.
  • Domain bucketing groups free-text area labels via fixed regex rules; unmatched falls into Other.
  • Every chart links into the underlying release-note rows — if a number looks wrong, click through to audit it.

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