Since UE5.6, ControlRig.EnableAnimNodePerformanceOptimizations is enabled by default, and this appears to be causing the issue. Specifically, when the control rig’s construction event is processed, Hierarchy->ResetToDefault() is executed and the hierarchy becomes detached, but the re-linking is delayed until the PerformUpdateToDate inside ExecuteControlRig on the next tick.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-316476 in the post.
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Component | UE - Anim - Rigging - Control Rig |
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Affects Versions | 5.6 |
Target Fix | 5.8 |
Fix Commit | 45907003 |
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Created | Sep 1, 2025 |
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Resolved | Sep 17, 2025 |
Updated | Sep 19, 2025 |