Unreal Engine Issues
Unreal Engine Issues
Sequencer does not save asset variables in event struct
UE - Anim - Sequencer - Jul 31, 2018When adding a struct to a keyframe, Object Reference variables are not saved and Soft Reference variables are saved sometimes. Opening a keyframe's properties when the selected struct has an object ...
Crash caused by Buffer Overread in TBitArray operator < function
UE - Foundation - Core - Aug 29, 2018A licensee has reported a crash that is caused by a Buffer Overread in TBitArray's operator < function. While the licensee did not provide reproduction steps, the crash is apparent from looking at t ...
Crash on loading pre-4.20 cloth data when compute skin cache is enabled in 4.21
UE - Graphics Features - Mar 19, 2019According to information from the licensee, the else clause was added to "FSkeletalMeshLODModel::(GetClothMappingData()" at CL 4437969 , but if it is the cloth data existing from 4.20 or earlier, it ...
[CrashReport] UE4Editor-Core!UnhandledException(_EXCEPTION_POINTERS *) [WindowsPlatformCrashContext.cpp:1457]
UE - Foundation - Core - Jun 5, 2020Generated from CrashReporter ErrorMessage: 64 (82%) Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff 7 (8%) Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading add ...
Compile on load crashes for classes within an abstract class
UE - Gameplay - Blueprint Compiler - Feb 20, 2021When compiling on load in -game, a blueprint class that inherits from a native class that is marked within and the class that it is within is abstract, a crash will occur when FBlueprintCompilationM ...
[Feature Request] Allow custom node to access the functions in MaterialTemplate.ush
UE - Graphics Features - May 31, 2021For example, If you try to call GetMaterialOpacityMaskClipValue() from a custom node, the editor will report a compilation error, as shown in the attached image.[Link Removed] [SM5] /Engine/Generat ...
Incorrect volume bounds check in FTranslucentLightInjectionCollector::AddLightForInjection
UE - Graphics Features - Apr 8, 2025The 'VolumeBounds' array in FTranslucentLightInjectionCollector::AddLightForInjection is accessed as a pointer instead of with 'VolumeCascadeIndex' and thus fails bounds checks for the outer volume. ...
Scalar Parameter versus Constant placed in Alpha of LERP produces inconsistent results in Blendable
UE - Graphics Features - Jun 8, 2015When placing a Scalar Parameter into the Alpha position of a LERP you will not get the same results as placing a Constant Value when used in a Post Process Material. Constant Value of 0: [Image Rem ...
Procedural Mesh Component Blocks Level from Saving
UE - Gameplay - Components - Aug 29, 2016When a blueprint is added to a level that contains a procedural mesh component the level is unable to save. The error message that pops up is attached as a screenshot. Edit PatrickD (08-29-2016): C ...
Certain combined Linear/Angular movements cause Client to freeze for several seconds
UE - Simulation - Physics - May 24, 2019When using Replicated Movement, certain combined linear/angular movements cause the client to freeze for several seconds and then catch up to the server. This is a regression from 4.21.2 (CL-4753647 ...