Unreal Engine Issues
Unreal Engine Issues
Actor corruption due to Hierarchy broken after load
UE - World Creation - Worldbuilding Tools - World Partition - Apr 25, 2023We recently hit a situation where some actors would suddenly teleport across the map when they were modified in the editor. We figured out that the AttachParent of some actors got reset on editor l ...
Matinee doesn't display animated SkeletalMesh if its origin is out of view
UE - Anim - Sequencer - Jan 23, 2015From 8/17/16 Tools sync: This is probably also happening in Sequencer. Think Sequencer should just auto-set this flag. ----------------------------------- If a SkeletalMesh actor is placed beyond v ...
Niagara Vector Field CPU access Error prevents its use in projects
UE - Niagara - Jan 31, 2020Niagara VectorFields do not function properly since "Fix CPU Access" changes are not persistently saved. After every Editor restart or reopening projects, the Niagara-VectorField driven Emitter and ...
Take recorder does not record camera or spring arm component transforms on player character
UE - Virtual Production - Tools - Take Recorder - May 4, 2020Component transforms for player characters don't seem to be recorded in take recorder. ...
Changing the scale of a single HISM instance greatly affects the LOD selection of all instances
UE - Rendering - Architecture - Sep 22, 2025When using ISMs and HISMs, each instance can have its own transform, which can affect the LOD selection of one or more instances. For HISMs in particular, changing the scale of a single instance gre ...
Assertion failed: InputOboeStream != nullptr when changing levels with Android voice enabled
UE - Audio - Jan 7, 2020Assertion failed: InputOboeStream != nullptr when changing levels with Android voice enabled User was able to workaround the issue by replacing Audio::FAudioCaptureAndroidStream::CloseStream() wi ...
Output warning log message for loading source texture of paper2D in Editor.
UE - Gameplay - Paper2D - Jul 30, 2020Outputs a warning log for loading source texture when Papaer2D is loaded in Editor. This may be due to a conflict post load of Paper2D and load source texture. The warning log is output only in ...
Blueprint functions with nested structs referencing UDataAssets generate errors if root not passed by value.
UE - Framework - Blueprint - Aug 17, 2022The source of the error appears to be a stray DefaultValue="None" that's contained within the inner "Test_Nested_TestContainer" split pin (copy/paste the node to notepad to see this). If you refresh ...
Composure doesn't indicate why Level Layering is disabled when used in a World Partition level
UE - Virtual Production - Rendering - Composure - Nov 1, 2022Composure doesn't indicate why Level Layering is disabled when used in a World Partition level this is confusing some users who are not familiar with World Partition. ...
Cannot save actor after actor component modification, Graph is linked to private object(s) in an external package
UE - Gameplay - Blueprint - Sep 28, 2016Cannot save actor after actor component modification. The user gets the error Graph is linked to private object(s) in an external package ...