UUM-139326

Fixed in 6000.7.0a2

Mentioned in 4 release notes.

First fixed in 6000.7.0a2 (Jul 9, 2026); relisted in 3 later releases.

Open on Unity Issue Tracker
VersionSectionRiskImpactNote
6000.7.0a4Fixes
Timeline
FixFixed issue where Timeline preview would generate prefab override modifications in certain cases, leading to degraded performance.
6000.7.0a3Fixes
Timeline
FixFixed issue where Timeline preview would generate prefab override modifications in certain cases, leading to degraded performance.
6000.7.0a2Fixes
Timeline
FixFixed issue where Timeline preview would generate prefab override modifications in certain cases, leading to degraded performance.
6000.7.0a2Fixes
Timeline
FixFixed issue where Timeline preview would generate prefab override modifications in certain cases, leading to degraded performance.

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