Unreal Engine Issues
Unreal Engine Issues
Animation timeline shows black when only animating the opacity of a widget (regardless of the the color setting in that widget)
UE - Anim - Sequencer - Jul 13, 2015This is something that needs to be solved at the color track level in sequencer, we need to be showing current values in place of 0,0,0 for the things that are not animated. When animating just the ...
Alembic file doesn't play animations when imported as Skeletal Mesh
OLD - Anim - Aug 21, 2018When importing an Alembic file as a Skeletal, the animation and morph targets keys are there but when played in the Viewport or Sequencer there is no animation. This was reported and tested in 4.2 ...
Water not rendering in Movie Render Queue
UE - Graphics Tools - Terrain - Water - May 3, 2024It appears that MRQ does not actually add the pass that updates the Water Info Texture in the WaterZone actor. If the Skylight is set to "SLS Captured Scene" and does not capture every frame, then t ...
AnimToTexture vertex animation stutters on looping frame
UE - Anim - Gameplay - Aug 8, 2025The AnimToTexture plugin generates an animated texture that results in a stutter when the animation loops. This looks to be related to the code in UAnimToTextureBPLibrary::AnimationToTexture which ...
Some property of EditCondition and FRuntimeFloatCurve changes cannot be detected by GetOnFinishedChangingProperties
UE - Anim - Sequencer - Mar 31, 2023We've received reports that you're not getting notifications when you change some properties on Sequencer keys. Specifically, I am not able to get notified in NotifyFinishedChangingProperties of SSt ...
When open the persona editor only the first time, the OnAnimChanged event is called with the argument none asset
UE - Anim - Runtime - Aug 14, 2023OnAnimChanged did not seem to work correctly only the first time when opening the anim sequence and a PreviewScene was created. The OnAnimChanged event is supposed to notify which anim was changed, ...
Uncrouching a character on a physics object causes the character to penetrate the object only when physics substepping is enabled
UE - Simulation - Physics - Mar 10, 2020This does not repro when physics substepping is disabled. The sequence of events in the character uncrouch code (UCharacterMovementComponent::UnCrouch) causes the capsule to move up then increase i ...
Editor Crashes when copy/pasting an emitter in the Niagara timeline
UE - Niagara - Feb 8, 2023When creating the emitter's track widget we search for the stack view model's root entry, but the stack view model pointer is null, so we crash. ...
Matinee movie recording is broken in 4.10
Tools - Dec 18, 2015When trying to record a movie from a matinee in 4.10, it can fail for a number of reasons: 1. The folder does not exist 2. The cinematic view modes do not take effect 3. Trying to record a streamin ...
Ensure condition failed : Unprocessed LatentActions accumulate by SetPlaybackPostion using Play method
UE - Anim - Sequencer - Nov 9, 2021If some sequencer events are added to LatentAction queue while calling SetPlaybackPostion using Play method, the events will not be digested. So the LatentActions cause that ensure condition failed ...