Unreal Engine Issues
Unreal Engine Issues
Motion Matching FPS instability causes jittering when using the root offset node
UE - MVF Character - Animation - Feb 23, 2026Offset root node is affected by frame rate and produces jitter in it's motion across various settings and styles. ...
Automotive Photo Studio Template project renders custom render passes incorrectly
UE - Editor - Content Pipeline - Datasmith - Importer - Dec 19, 2019Renders with a custom render pass from the level in the Automotive Photo Studio Template are incorrect. They appear to be affected by auto exposure. ...
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. ...
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 ...
Disabling Gear VR plugin causes packaged game to crash on launch
UE - Platform - XR - May 30, 2017Disabling the Gear VR plugin causes packaged games to crash on launch. This could be related to [Link Removed] but this is new to 4.16 and does not prevent packaging the project, only launching it a ...
Packaged Game Crashes When Launched with the -dx12 for Ray Tracing Features and PixelStreaming enabled
PixelStreaming - Apr 3, 2019Packaged game crashes when launched with the -dx12 option and PixelStreaming is enabled. Found in 4.22 CL# 5660361 and 4.23 CL# 5704223 ...
Crash with Gear VR when using splash screen
UE - Platform - XR - Dec 5, 2016Crash with Gear VR when using splash screen. The app appears to crash when trying to call the splash screen. ...
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. ...