Unreal Engine Issues
Unreal Engine Issues
Mutable - morph does not work for a skinned mesh with more than one uv channel
UE - Anim - Mutable - Oct 16, 2025The morph functionality fails to change when the skinned mesh contains more than one UV channel in a Customizable Object. ...
Rotating terrain with heightmap causes black splotches on terrain
UE - LD & Modeling - Terrain - Landscape - Jan 26, 2015Rotating a landscape with a heightmap causes lightmass to break, rendering black splotches across terrain after building lighting. ...
bLightAttachmentsAsGroup doesn't work with default ACharacter setup which has a hidden capsule component as the root
UE - Graphics Features - Nov 15, 2016https://udn.unrealengine.com/questions/318476/bug-light-attachments-as-group-not-working-on-char.html ...
Crash in the Blueprint Debugger.
UE - Gameplay - Blueprint - Nov 21, 2017After creating a few different Blueprints in the editor and adding a breakpoint to a Function, a crash ensues when using Step In to debug the Blueprint. ...
Deltagen Importer - Materials still import if disabled
UE - Editor - Content Pipeline - Datasmith - Importer - Dec 6, 2018Materials still import if disabled in Deltagen Fbx Importer. Import Geometry bool also looks to not be functioning. ...
Copy Actors out of play mode ( 5.3.1 )
UE - Editor - Dec 22, 2023From UDN case #00645621: Is it possible that this function has been deactivated? In 5.03 I can copy objects from the game mode. ...
Hot reload does not compile changes to automation tests
UE - Automation Test - Jan 13, 2016After making a change to an automation test function and triggering a hot reload, the changes are not reflected the next time the text is ran. ...
UPaperGroupedSpriteComponent does not override handling for its multiple FBodyInstances
UE - Simulation - Physics - Jul 10, 2019UPaperGroupedSpriteComponent does not properly update its physics data at runtime, due to relying on the inherited UPrimitiveComponent functions that do not handle its multiple FBodyInstances. ...
[CrashReport] UnrealEditor-AppFramework!SColorPicker::HandleParentWindowClosed(TSharedRef<SWindow,1> const &) [SColorPicker.cpp:1530]
UE - Editor - UI Systems - Sep 26, 2022Generated from CrashReporter This is NOT a regression. Tested in //UE4/Release-4.27 at CL18319896 Tested in //UE5/Main at CL 22175708 - Issue did not occur ...
FRenderTarget::ReadPixels does not populate FColor array properly in packaged build
UE - Graphics Features - Nov 1, 2016When the ReadPixels function is called, the FColor array that is passed in has its elements populated when in PIE and Standalone but array elements are empty in a packaged project. ...