UUM-148374

Fixed in 6000.7.0a5

Mentioned in 10 release notes.

First fixed in 6000.7.0a5 (Aug 20, 2026); relisted in 9 later releases.

Open on Unity Issue Tracker
VersionSectionRiskImpactNote
6000.7.0b8Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0b7Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0b6Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0b5Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0b4Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0b3Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.6.3f1Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0b2Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0b1Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport* window is destroyed before its content is created.
6000.7.0a5Fixes
UI Toolkit
FixFixed a NullReferenceException thrown when the *UI Viewport window is destroyed before its content is created. (UUM-148374) First seen in 6000.7.0a3.*

Pick your Unity version

Unity Releases compares releases against the version your project is on. Picking it now keeps Compare versions focused on what changes between where you are and where you might be going.