Unreal Engine Issues
Unreal Engine Issues
Chaos Mover crash in standalone editor client
UE - Runtime - Character - Aug 18, 2026When using the Chaos Mover with resimulation enabled, standalone editor processes running as a client will crash around 80% of the time upon startup. ...
Crash in FMovieSceneNumericVariant::Set when loading a Level Sequence with Custom Time Warp on Android
UE - CAPT - Sequencer - Aug 14, 2026On Android, loading a Level Sequence fatals in the async loading thread: Assertion failed: (NewValue & ~PAYLOAD_Bits) == 0 MovieSceneNumericVariant.cpp:133 Unable to store a pointer outside of a ...
Baking FK Control Rig with Spawnable Manny in sub sequence is not working
UE - CAPT - Anim in Engine - Aug 14, 2026FK Control Rig bake is not working on Manny, both as a SKM actor or a BP Actor with a SKM component in it. This is only happening when the actors are Spawnable and nested inside a master sequence. I ...
Virtual Texture Collection doesn't show correct mip level
UE - Rendering - Architecture - Jul 30, 2026Textures from VirtualTextureCollections appear blurry because the correct mip level isn’t shown unless FVirtualTextureCollectionResource::InitRHI is modified in VirtualTextureCollection.cpp withProd ...
MovieSceneSequencePlayer GetEndTime() reports incorrect end time
UE - CAPT - Sequencer - Jul 28, 2026We've noticed an inconsistency with UMovieSceneSequencePlayer::GetEndTime(). It does not take into account DurationSubFrames. See UMovieSceneSequencePlayer::GetDuration() for comparison. Also, the c ...
Sequencer - if you set the Take Separator to - rather than _ the New Take naming will mess up
UE - CAPT - Sequencer - Jun 9, 2026When using a non-default take separator (eg "-") the "New Take" option produces a malformed proposed name for the take. ...
Conflict between sequencer transform track and Parent Constraint from the Animation Mode breaks temporary pivot translation on any actor
UE - CAPT - Anim in Engine - Jul 15, 2025Note: This affects all versions from at least UE 5.3, including mainline latest. The "Animation" Editor Mode allows creating constraints for level actors. One of these, the "Parent" constraint, con ...
Sequencer: Skeletal Animation with montages can cause blending issues when re-playing the same sequence on the same character
UE - CAPT - Sequencer - Oct 1, 2024The code in MovieSceneSkeletalAnimationSystem.cpp storages montage data on a per skeletal mesh component, per section basis. This (and a few other bits of logic) cause issues for external UDN user w ...