UUM-153234

Fixed in 7000.0.0a10

Mentioned in 4 Unity 7 release notes.

First fixed in 7000.0.0a10 (Oct 15, 2026); relisted in 3 later releases.

All (7)Unity 7 (4)Unity 6 (3)
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VersionSectionRiskImpactNote
7000.0.0a16Fixes
UI Toolkit
FixFixed the Editor freezing when a VisualElement was added under one of its own descendants, which now throws an ArgumentException instead.
7000.0.0a12Fixes
UI Toolkit
FixFixed the Editor freezing when a VisualElement was added under one of its own descendants, which now throws an ArgumentException instead.
7000.0.0a11Fixes
UI Toolkit
FixFixed the Editor freezing when a VisualElement was added under one of its own descendants, which now throws an ArgumentException instead.
7000.0.0a10Fixes
UI Toolkit
FixFixed the Editor freezing when a VisualElement was added under one of its own descendants, which now throws an ArgumentException instead.

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