Unreal Engine Issues
Unreal Engine Issues
Shader Complexity not working correctly on Deferred Decals
UE - Graphics Features - Sep 3, 2020If you place a deferred decal in the world and then set the view mode of the viewport to "Shader Complexity", the decal doesn't affect the complexity value. ...
Image appears upside down when using Export Render Target on Android
UE - Platform - Mobile - Oct 16, 2020Image appears to be upside down Bug was checked on production, engine version 4.25.3 and is NOT reproducible Regression = yes ...
GC Clustering broken for USoundWave assets (crash)
UE - Foundation - Core - Mar 29, 2017Assert crashes Editor in the GC system during packaging due to USoundWave assets not being configured for GC clustering. Disabling GC clustering in project settings is a workaround, but the fix is ...
Font outlines do not multiply color and opacity from parent widgets
UE - Editor - UI Systems - Slate - Jan 16, 2017We don't currently multiply by the parent widget's color and opacity when calculating the color and opacity of a text block's outline. Since color and opacity are precalculated before the outline is ...
Python commandlet crashes when spawning actors in a level
UE - Editor - Workflow Systems - May 7, 2019Using the python commandlet to spawn actors within a Map and then saving it causes a crash in the commandline. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 6338849) ...
[CrashReport] UE4Editor-Renderer.dylib!FUploadObjectsToBufferCS* TShaderMap<FGlobalShaderType>::GetShader<FUploadObjectsToBufferCS>()
UE - Graphics Features - Jul 14, 2017This is a common crash affecting Mac users in 4.16 User DescriptionsMacOS High Sierra Beta 2 - Starting a project ...
[CrashReport] Crash on Mac - UE4Editor-IOSTargetPlatform.dylib!FIOSDeviceHelper::DoDeviceConnect()
UE - Platform - Mobile - Jul 20, 2017This is a common crash affecting Mac users on 4.16, it has occurred since at least 4.14. Users have not provided any descriptions. ...
Debug Console output remains on screen after closing VR Preview if "Debug in stereo layer' is enabled
UE - Platform - XR - Jan 23, 2018Affects VR Preview in Editor Reproduced in 4.18.3 CL 3832480 and 4.19 P1 CL 3837072 ...
Placing 'Groom' asset into scene results in assertion failed
UE - Graphics Features - Feb 10, 2020Dragging a groom asset into the level results in a crash. Link to Project: [Link Removed] Tested in: 4.25 CL#11223911 ...
Interaction between sublevels and LevelSequences can break actors attachments hierarchy of the sublevel.
UE - World Creation - Worldbuilding Tools - Aug 6, 2025Having a LevelSequence opened and unhiding a sublevel can break the attachment hierarchy of the actors that are inside the sublevel. This also affects to the sublevel asset itself. ...