Unreal Engine Issues
Unreal Engine Issues
Shader Complexity not working correctly on Deferred Decals
UE - Rendering - 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. ...
>1ms increase in frame time with showflag.translucency , despite minimal translucency in the scene
UE - Rendering - Features - Sep 2, 2021Licensee reports this change, and can confirm a very rough similarity observed in a template project in 4.27: [Image Removed] ...
Collision between Vehicles and Instanced Meshes are behaving differently than expected
UE - Runtime - Simulation - May 20, 2022This is a regression tested in //UE4/Release-4.27 CL18319896 Vehicle from the Vehicle template clips through instanced meshes, and can't be driven on them. ...
Screen Percentage does not behave correctly with SceneDepth Post Processing
UE - Rendering - Features - Sep 14, 2022This is a regression tested in //UE4/Release-4.27 CL18319896 Screen Percentage does not behave correctly with SceneDepth Post Processing. ...
Text cannot be displayed when switching languages if a text is constructed using LocalizationTable at runtime.
UE - AI Workflows - UI Systems - Localization - Dec 5, 2022Using LocalizationTable in text localization does not switch text correctly. This is not a problem in UE4.27, but it is a problem in UE5.0 and later. ...
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 ...
Enabling MobileHDR on Meta Quest 3 device causes intermittent hang in splash screen
UE - Platform - XR - Feb 2, 2026Using MobileHDR on an actual MetaQuest device (MQ3 tested) causes an intermittent hang/deadlock in the splash screen. This hang in the splash screen seem to happen maybe 1 in 5 times. The first ti ...
[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 ...