Unreal Engine Issues
Unreal Engine Issues
Failed to compile UE4 on Mac using incompatible Xcode version
UE - Platform - Apple - Apr 7, 2017Clone the GitHub repo for 4.15.1, run setup, gpf, then build UE4. Fails to compile due to metal errors. It would be nice if we could produce a warning if the compiler being used is newer than what ...
The Radial Blur Shader Doesn't Look Correct With Raytracing Translucency Enabled
UE - Graphics Features - Lumen - Jan 21, 2020The Radial Blur shader doesn't look correct with ray tracing translucency enabled. Found in 4.24.1 CL#10757647 Reproduced in 4.25 Main CL#11050671 ...
[3ds max] Some geometry will display in all black in Path Tracer renders
UE - Editor - Content Pipeline - Datasmith - Exporters - Dec 12, 2025Reported in SF [Link Removed] Some geometry from 3ds Max will display as all black when viewed in Path Tracer rendering. This effect is visible in both UE and Twinmotion. This was tested with Data ...
Alembic Files Import With Blocky UVs
UE - Editor - Content Pipeline - Import and Export - Dec 6, 2019Alembic files imported come in with blocky UVs. Attached is a zip with the files and pictures that show the issue. Found in 4.23.1 CL#9631420 Reproduced in 4.24 Preview 4 CL#10387632, 4.25 Main CL# ...
REGRESSION: HierarchicalInstancedStaticMeshComponent LOD transitions are broken in 4.9 and Main
UE - Graphics Features - Aug 24, 2015While testing another fix I noticed HISM LOD transitions are not working in Main or 4.9 branch. There is no screen-door effect and multiple LODs seem to be rendering simultaneously compared to 4.8. ...
editor crashes when variable inside of a struct is set to a class type then the object is moved to a new folder
UE - Gameplay - Blueprint - Mar 17, 2015If a struct has a variable set to a class type, then the object of that class type is moved to a new folder in the editor, the struct will replace the class type with "class", which causes the edito ...
Visual inconsistencies when zooming in/out in the designer tab
UE - Editor - UI Systems - Jun 9, 2017Visual inconsistencies when zooming in/out in the designer tab. In the example provided. There is a vertical box containing sever images with a top padding of 1. When zooming in and out of the graph ...
Crash when Listen Server Attempts ServerTravel in Play in New Editor Window
UE - Networking - Jun 9, 2015JamesG: New callstack on UDN thread points to UNetDriver::TickFlush Editor crashes if a listen server attempts to use the console command ServerTravel while in Play in a New Editor Window. CrashR ...
Listen Server Without Microphone Will Drop Clients with Microphone if Voice is Enabled
UE - Networking - Mar 28, 2017Listen servers that do not have a microphone hooked up are dropping clients that do have microphones when the client attempts to transmit voice. The log contains the following errors: [2017.03.28- ...
Screen Space Reflections not showing in Panoramic Capture
UE - Graphics Features - Sep 10, 2020Reflections not showing in Panoramic Capture images. Reported and tested in versions 4.25.3(CL 13942748), 4.24.3(CL 11590370), and 4.23.1(CL 9631420). ...