Unreal Engine Issues
Unreal Engine Issues
Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location
UE - Simulation - Visual - Jun 22, 2025Enabling bUpdateComponentTransformToRootBone in a GeometryCollectionComponent causes broken particles to appear in the wrong location. When that flag is true, the moment the GeometryCollection (GC) ...
Type Promotion nodes should cache pins that have had their type manually converted by the user
UE - Framework - Blueprint Editor - Apr 7, 2022[Link Removed] We should just cache any user-converted pins on the type promotion nodes and make sure to keep those types if they are valid. If they are invalid, then we can orphan them or someth ...
Subobjects can change sorting order in Blueprint Subobject Editor
UE - Gameplay - Blueprint Editor - Apr 3, 2023Subobject sorting is not stable in the Subobject editor, so the UX is bad if you are creating complex hierarchies because it's difficult to keep track of newly added or reordered components. ...
Subobject editor collapsed nodes are auto expanded when adding or moving a node
UE - Framework - Blueprint Editor - Apr 3, 2023Node operations cause all of the collapsed nodes to be auto expanded. This is disruptive when working with complex hierarchies because you can't hide irrelevant components. ...
The hair shading near the screen edge becomes whiter if only a skylight applies
UE - Graphics Features - Apr 4, 2023This appears to be an issue with Lumen, with some off-screen information making its way on-screen during an upsampling pass. We checked a Renderdoc capture and that is where it seems to come from. ...
Displacement + TAA causes "vibrating"/"buzzing" artifacts
UE - Rendering - Architecture - Jun 4, 2024There is a buzzing artifact on shadows that is seen in the provided test project. The problem seems to be far more subtle when VSM is turned off. Licensee mentions that turning r.Velocity.ForceOutpu ...
Cook Warning "Saving FText which has been initialized from FString" when a user-defined BP structure contains a native C++ struct with an FText
UE - Framework - Blueprint - Sep 23, 2025Consider a C++ struct containing an FText. Now consider a used-defined BP structure containing that C++ struct. When cooking an asset that references such a user-defined BP structure, the following ...
Saving a new material after creating a landscape crashes the editor
UE - Graphics Features - Dec 27, 2016This crash occurs when you create a landscape, then create and save a material. Note The crash does not occur unless a landscape was created first I came across a couple of crashes revolving around ...
Movie playback not keeping texture filtering settings when switching contexts
UE - Platform - Mobile - Feb 3, 2017Appears some Android OpenGL drivers are not preserving the texture filtering when changing render contexts. Added saving and restoring it in context cases. ...
Assertion failed in FAudioDevice::UnregisterSoundClass when GC
UE - Audio - Aug 13, 2018The licensee reported that check(IsInAudioThread()) was failed in FAudioDevice::UnregisterSoundClass when GC. The following is the call stack: 1 #00 pc 030d7b58 libUE4.so HandleError (/home/pirates ...