Unreal Engine Issues
Unreal Engine Issues
Build crash when enabling r.CreateShadersOnLoad=1
UE - Rendering Architecture - Shaders - Nov 10, 2025When "r.CreateShadersOnLoad" is enabled, cooking will crash due to failure to create a shader. This occurs on //UE5/Release-5.5, CL: 41545209 and //UE5/Release-5.6, CL: 45232827 ...
Crash on iOS9 when using Apple's CFNetwork library
UE - Platform - Mobile - Dec 6, 2016Many clients have hit a crash due to an Apple library using operator delete on a memory block that was not allocated with operator new. This happens with the following callstack on iOS9 in UE4.13 o ...
Widget Components set to screen space do not render in the correct position with low engine scalability settings after upgrading to 4.8 from 4.7
UE - Editor - UI Systems - Jun 29, 2015I widget component that has been set to show in screen space will not render in the correct position of screen. It will be offset. This appears to happen after a project has been upgraded from 4.7.6 ...
r.Shadow.RadiusThreshold and r.Shadow.FadeResolution not affected by Scalability Settings
UE - Graphics Features - Apr 20, 2018r.Shadow.FadeResolution and r.Shadow.RadiusThreshold values in DefaultScalability.ini are not being applied ...
Clicking the Closed Loop check box for a Blueprint SplineComponent crashes the Editor.
Tools - May 12, 2015Clicking the Closed Loop option in a new Spline Component results in the Editor crashing. This only occurs in 4.8 Preview 1 (so far). 4.7.6 and Main appear to be working correctly. ...
Upgrading a code project from 4.8 to 4.9 results in the startup project in the Visual Studio solution changing from the game project to the UE4 project.
UE - Foundation - Cpp Tools - UnrealBuildTool - Sep 22, 2015Upgrading a code project from 4.8 to 4.9 results in the selected startup project in the Visual Studio solution changing from the game project to the UE4 project. This results in unexpected behavior ...
Crash on setting Material in Element 1 of Combined Mesh
Tools - Mar 19, 2015Crash on clearing or setting the second or third material slot in the Static Mesh Editor on an imported combined FBX Mesh. Also Reproduced in Main Promotable-CL-2484152 (Perforce) NOTE: User is o ...
Missing Oculus 1.6 Support
UE - Platform - XR - Aug 3, 2016Add the 1.6 integration to 4.13 for release. ...
Misspellings in Material_Properties level of ContentExamples
Docs - Samples - Jan 18, 2017In the Material_Properties level of ContentExamples, separate is misspelled in demo display 1.6 and tessellation is misspelled in demo display 1.8. ...
iOS - Launch On - Application Crashes on device, on iOS 8 devices
UE - Platform - Mobile - Jul 20, 2016Blueprint Template Launch On from Mac crashes on device. ...