Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Crash related to movie render - UE4Editor_UnrealEd!UEditorEngine::Tick()
UE - Anim - Sequencer - Jun 22, 2017This is a common crash occurring for users in the 4.15 and 4.16 releases. It seems related to rendering movies in Sequencer, but additional information is currently unavailable. A log file is attac ...
With root motion, AnimSeq moves in Persona when Additive Anim is enabled
OLD - Anim - May 26, 2015Animation Sequence preview moves from the origin with root motion enabled and either local or mesh space selected for the Additive Anim Type. Example Project: [Link Removed] ...
Branching point notifies can lose their linked montage
UE - Anim - Runtime - Feb 10, 2022Currently UAnimSequenceBase::OnModelModified assumes that a notify is linked to a sequence and not a montage. This causes branching point notifies to lose their linked montage when being updated an ...
Using more than a single break node disables fast path
OLD - Anim - Mar 7, 2019Using more than a single break struct node in sequence (despite no break nodes performing calculations) disables fast path. Splitting structs instead does not cause this issue. ...
The DistanceCurveModifier generates Distance Curves with zero values for Root Motion animations
UE - Anim - Gameplay - Jun 30, 2025The DistanceCurveModifier data modifier generates curves that return zero values only. This issue has been tested on several Animation Sequences with enabled Root Motion and always occurred. ...
Editor Viewport Does Not Update Curves in Real Time/as Curves are Being Edited
UE - Anim - Sequencer - Oct 6, 2017When editing animation curves in sequencer, the animated object would update as the curves are changed/altered. Result: Would provide better/real time feedback to the animator. Improves Workflow: Th ...
Keying the Spawned Property of a Spawnable Breaks in the details panel
UE - Anim - Sequencer - May 18, 2017The spawnable mesh seems to be breaking when their spawned property is altered. If you uncheck the spawned property in Sequencer, the Details panel also breaks similar to keying the property. This ...
[CrashReport] Crash in UViewportWorldInteraction::FindTransformGizmoAlignPoint
UE - Editor - Workflow Systems - Apr 27, 2017This is an early trending crash coming out of the 4.16 Preview. Users have not provided any additional information about this crash. This was also experienced internally by Alex.P [Link Removed] ...
There's no efficient way to pause/resume widget animations
UE - Anim - Sequencer - Jul 27, 2017The implementation of UMGSequencePlayer::Play and UMGSequencePlayer::Pause are not conducive to being able to efficiently pause and resume animations. Some problems that need to be addressed: 1. ...
Crash when rendering cinematic in a Separate Process without "-NoLoadingScreen" cmd argument
UE - Anim - Sequencer - Jul 5, 2016Crash when rendering cinematic in a Separate Process without "-NoLoadingScreen" cmd argument. Occurs in 4.12 and 4.13 in both Matinee and Sequencer Error message: Assertion failed: SizeX > 0 && S ...