Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Cooking Commandlet crash - FAsyncWriteWorkerWithSplitExports::DoWork() [savepackage.cpp:563]
UE - Foundation - Core - Cooker - Aug 21, 2017This is a regular commandlet crash that has occurred since at least 4.15. Source Context 543 IFileManager::Get().SetTimeStamp(*Filename, FinalTimeStamp); 544 } 545 } 54 ...
Incorrect macro definitions in VisualLogger.h
UE - Gameplay - Mar 28, 2018UE_CVLOG_BOX, UE_CVLOG_OBOX, and UE_CVLOG_CONE have problems with their definitions. UE_CVLOG_OBOX calls UE_VLOG_BOX instead of UE_VLOG_OBOX All 3 of these macros also call their respective macro ...
Constraint to kinematic root body prevents skeletal mesh from sleeping
UE - Simulation - Physics - Mar 5, 2019Linked test project contains already set up actor as described in steps to reproduce. Using a kinematic body on a root bone, setting all other bodies sleep family to Custom, and their custom sleep t ...
Take Recorder - Viewport Freezing and Performance Degradation When Recording Without Subsequences
UE - Virtual Production - Tools - Take Recorder - Apr 11, 2024Description: In Unreal Engine 5.4, when recording camera movements using the Take Recorder with the "Record Sources Into Sub Sequences" option turned off, significant viewport freezing and performan ...
Nanite Mesh Dither Opacity Mask Not Working in 5.6.0
UE - Graphics 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. ...
Opening particle system crashes editor
UE - Graphics Features - Jan 27, 2016Opening a specific particle system crashes the editor. If the particle system is used within a level and the level is played, the editor will crash with no callstack. Logs are attached. Frequency: ...
Splash screens do not appear in Gear VR
UE - Platform - XR - Apr 28, 2017A splash screen that has been set up in the DefaultEngine.ini with the following settings does not show in Gear VR[Oculus.Splash.Settings] bAutoEnabled=True TexturePath=/Game/Texture/AICON-Green ...
LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created
OLD - Anim - Aug 8, 2017LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created. It seems to be using the LOD Build Scale to double in size on actor merge. This is a regression: ...
Mesh data will be deleted from Static Mesh if added as a Hierarchical Instanced Static Mesh Component through blueprint
UE - Gameplay - Aug 10, 2017Mesh data will be deleted from the Static Mesh if added as a Hierarchical Instanced Static Mesh Component through blueprint. All of the mesh data (actual geometry) and LODs will be deleted from the ...
Unable to run UE4Editor using the -SM4 commandline argument
UE - Graphics Features - Nov 16, 2018Attempting to run the UE4 Editor using SM4 causes an error to popup stating that "A Feature Level 5 video card is required to run to Editor. AvailableFeatureLevel = SM4, ShaderPlatform = PCD3D_SM4" ...