Unreal Engine Issues
Unreal Engine Issues
With Pause Event on frame 0, sequence will never be able to resume playing
UE - Anim - Sequencer - Jun 13, 2017With Pause Event on frame 0, sequence will never be able to resume playing. It appears to trigger the event again. ...
Distributed HLOD builds always fail for projects not under the Engine Root
UE - Engine Scaling - Streaming - HLOD - Dec 4, 2024In BuildProject.txt, to make relative path to the project outside the engine root, all paths contains “..” after action command directory. D:/dev/UnrealEngine-5.5.0//HLODTemp/f09bf0f5/HLODBuilder0 ...
[Console Commands] - au.debug.sounds.sort priority shows all sounds as priority 1.0 when volume scaling is bypassed or sound is 2D
UE - Audio - Apr 5, 2022The priority display does not correctly reflect the set priorities of sounds when they are not being attenuated or when Bypass Volume Scale for Priority is Enabled. If a sound is attenuated and scal ...
Nanite Mesh Dither Opacity Mask Not Working in 5.6.0
UE - Rendering - Features - Nanite - Jul 30, 2025In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...
[CrashReport] UE4Editor_MovieSceneCapture!FormatForEDL() [moviescenecapturehelpers.cpp:216]
UE - Anim - Sequencer - Jul 6, 2017This is a common crash affecting users in 4.16. User Descriptionsrender a sequence to a video file or image sequence Source Context 205 void FormatForEDL(FString& OutputString, const FStri ...
[CrashReport] Assertion failed on Linux: SharedContext.hGLContext in OpenGLLinux.cpp
UE - Platform - Linux - Jun 16, 2017This is a top community crash occurring on Linux. The two linked CrashGroups have nearly identical callstacks. A log file is attached. Additional information is currently unavailable. Callstack f ...
"ShowFlag.InstancedFoliage 0" hides HISMC
UE - World Creation - Worldbuilding Tools - Foliage - Jul 29, 2020Hierarchical Instanced Static Mesh components that contain no foliage are disappearing when ShowFlag.InstancedFoliage 0 is used. This was reported and tested in 4.24.3 (CL-11590370) and reproduced ...
[CrashReport] Ongoing CollectGarbageInternal() assertion in 4.17
Tools - Aug 22, 2017This callstack is occurring in 4.17.0 and 4.17.1, and appears to be a continuation of [Link Removed], which was fixed in 4.16.2 with CL 3502786. I'm not re-opening [Link Removed] because there are ...
Float Curve evaluation may yield completely wrong results due to floating-point precision issue
UE - Runtime - Animation - Oct 31, 2024Note: This is possibly related to [Link Removed] Backlogged . For some inputs, function UE::Curves::WeightedEvalForTwoKeys( ...
Crash when Landscape Max LODLevel is set to 0
UE - LD & Modeling - Terrain - Landscape - Mar 16, 2018Reproduced in 4.19.0 CL 3944462 and 4.20 Main Unable to reproduce in 4.18.3 CL 3832480. This is a regression. ...