Unreal Engine Issues
Unreal Engine Issues
Undo and ConstructionScript break the AttachChildren array
UE - Gameplay - Components - Nov 14, 2019Undo fills AttachChildren array with null by the undo serializer. After that, a construction script tries to remove child components from parent component's AttachChildren but it can't find its poi ...
[MetaSounds] - If the audio output hits an extreme Gain value, the Audio Meter Widget stops responding
UE - Audio - MetaSounds - May 20, 2022It's possible to have the Audio Meter widget stop responding if you set the Gain really high. It will cease to work as long as the MetaSound window is open. Closing and reopening the MetaSound windo ...
Undo after disconnecting a target pin will cause a series of internal compile errors
UE - Gameplay - Blueprint - Mar 15, 2016Undo after disconnecting a target pin will cause a series of internal compile errors User Description: I've run into what I think is a bug when attempting to compile a blueprint after mistakenly b ...
Switching project monitor with shift+win+arrow keys
UE - Rendering Architecture - RHI - Apr 24, 2025Using Windows+Shift+Arrow keys to move the application window in Windowed Fullscreen from a low resolution monitor to a high resolution monitor does not resize the application window on a Windows 10 ...
Upgrading Project to a New Engine Version Causes Errors When Attempting to Open Tutorial Blueprints
UE - Gameplay - Nov 11, 2015When you create a project in version 4.8.3, and update it to either 4.10 or Main, there seem to be issues loading the Engine Content Tutorials for FeaturePacks, InstallingiTunesTutorial, and Setting ...
"Always Center Window to Screen" No Longer Functioning in New Editor Window (PIE)
Tools - Dec 11, 2015Regression: In UE4.10, the border that now occurs around New Editor Window causes window to extend beyond native screen resolution designated in Editor Preferences causing the window to 1) Not be ce ...
Crash on play if a BP uses a ClearInstances node followed by an AddInstance node
UE - Graphics Features - Jul 21, 2017Crash on play if a BP manipulates a InstancedStaticMeshComponent by using a ClearInstances node followed by an AddInstance node. This is a blocker for the licensee. This is a regression: Working ...
Crash in FUniformExpressionSet::FillUniformBuffer trying access deleted UTextureCollection
UE - Rendering Architecture - May 30, 2025Crash in FUniformExpressionSet::FillUniformBuffer trying access deleted UTextureCollection (Experimental in 5.6). The licensee describes their crash, their analysis, and a proposed fix: This crash ...
Cannot manipulate morph targets unique to Slave Component through Master Component
OLD - Anim - Apr 1, 2016Cannot manipulate morph targets that are unique to the Slave Component through the Master Component. So the situation here is that the Head(Master) does not have the "BeerBelly" morph target, but t ...
Initializing custom Component on Actor in constructor causes odd hierarchy and details panel issues
UE - Gameplay - Blueprint - Feb 19, 2019When testing with a simple setup, as follows: MySceneComponent has a UProperty(VisibleAnywhere, BlueprintReadOnly) of a USphereComponent pointer, initiated in the Constructor AMyActor has a UProper ...