Unreal Engine Issues
Unreal Engine Issues
Error when exporting OBJ unattended
UE - Editor - Content Pipeline - Import and Export - Dec 1, 2020When doing an unattended OBJ export with python. The export will fail and give the atteched callstack. ...
Static imported as skeletal removing material IDs with some FBX
Tools - May 27, 2016Static imported as skeletal removing material IDs with some FBX. This user's FBX files are, so far, the only ones that exhibit this behavior ...
It is possible for PreLoadScreen to leak memory when an EngineLoadingScreen returns IsDone while still loading
UE - Rendering - Graphics Features - Jan 9, 2025It is possible for a class that implements IPreLoadScreen to leak memory if GetPreLoadScreenType returns EngineLoadingScreen and IsDone returns true before the engine signals loading is completed vi ...
If enable iostore and run BulkData.lock twice on the same frame, the second time get pointer will be nullptr
UE - Foundation - Core - Jun 17, 2020[CrashReport] UnrealEditor-AnimGraph!UAnimGraphNode_Base::GetAnimBlueprint() [AnimGraphNode_Base.h:306]
zComponent - Archive - May 16, 2022Generated from CrashReporter ...
Ensure and Assertion thrown while attempting to change Float value on a Sky Light using the Set Editor Property node
UE - Editor - Verse Class Editor - Apr 25, 2022This is a regression. Assertion thrown while attempting to change a Float value on a Sky Light component using the Set Editor Property node. Different property values can trigger this assertion bes ...
Missing logging or error when applying an anim instance to a skeleton that the anim instance doesn't match.
UE - Runtime - Animation - Feb 9, 2026Currently, we detect whether an anim instance is supported by the skeletal mesh and, if it isn't, unreference the instance, but we don't error or warn the user that this happened. This leads to conf ...
Slate Post Buffer does not work correctly when changing Default Back Buffer Pixel Format
UE - AI Workflows - UI Systems - Slate - May 20, 2024tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out
UE - Platform - Mobile - Jan 22, 2019When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...
Subobject ComponentClass overrides cause failing assertions due to UObject reconstruction on AsyncLoadingThread
UE - Engine Scaling - dSTM - Dec 19, 2025Context The blueprint editor allows you to override an actor component's class in derived blueprints (component details panel -> Component Class). [Image Removed] Problem When a blueprint and it ...