Unreal Engine Issues
Unreal Engine Issues
"Content Examples" project's navmesh crashes editor
UE - Gameplay - Nov 5, 2014In UE4.5, Opening a Content Examples project and opening the "NavMesh" level, selecting "SM_DemoCube" and moving it results in the editor crashing according to user. ...
Crash when testing a sound in UMG that has been added to an audio track for an animation
UE - Editor - UI Systems - May 25, 2016The editor crashes when testing an animation that has an audio track containing a wave sound. ...
Actors in Level Sequence in a World Partitioned level do not move
UE - World Creation - Worldbuilding Tools - World Partition - Jan 11, 2023Regression: Tested in UE5/Release-5.0, this issue does not occur so it is a regression This issue occurs when the cube has "Is Spatially Loaded" enabled in Details as well as when the cube is added ...
Static lights become stationary after toggling visiblity of level in packaged build
UE - Graphics Features - Jun 11, 2025In 5.5, there is a regression with baked lighting where static lights become stationary lights when a level is hidden and then made visible again. This happens in packaged builds and shows up as sta ...
Local Variable loses value after reference moves file location
UE - Gameplay - Blueprint - May 23, 2017Local Variable loses value after reference moves file locations. This does not just affect construction scripts, following these steps with a function instead produced the same result. This issue do ...
[Audio Modulation] - Ensure is thrown when attempting to modulate a Source Effect at runtime
UE - Audio - Modulation - Sep 6, 2023Does *not* occur in editor. Only in standalone and runtime. Occurs when modulating Chorus or Bit Depth Also occurs in 5.2 and 5.3. I also noticed the test with this is supposed to set the chorus e ...
FHLSLMaterialTranslator::GetMaterialEnvironment can crash or not load UMaterialParameterCollections
UE - Rendering Architecture - Materials - Apr 30, 2025In UE 5.5, the Editor may crash in FHLSLMaterialTranslator::GetMaterialEnvironment when loading materials with Material Parameter Collections, likely due to async loading. Calling ParameterCollectio ...
InstanceOnly UProperties accessible in Blueprint
UE - Gameplay - Blueprint Editor - Nov 30, 2022Reproduced 3/3 times. Issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. ...
Crash when deleting BindingOverrides if the target property is left open on the details panel
UE - Anim - Sequencer - Sep 22, 2023Crash if opening ALevelSequenceActor::BindingOverrides in the details panel and run a process that empties the BindingOverrides elements. Workaround: FMovieSceneObjectBindingID FMovieSceneObjectBi ...
Speedtree shader node broken in a Shipping package.
UE - Graphics Features - Jul 6, 2018I attached the 4.19 and 4.20 version of the project. The trees have no leaves when packaging with Shipping in 4.20 preview 5. It works fine in 4.19. ...