Unreal Engine Issues

Reimporting skeletal mesh clears material references from material slots

This occurs in //UE4/Release-4.15, //UE4/Dev-Editor, and //UE4/Main Does not occur in 4.14.3 ...

Changes of parameters from materials do not update in viewport after UE restart until recompiling

There is an issue where changes of VECTOR(3) parameters from materials do not update in viewport after UE restart until recompiling. This issue does not appear to be a regression. ...

LandscapeComponent generates incorrect OccluderVertices for software occlusion

OccluderVertices didn't consider the subsection's transition, so the position of the OcclusderVertices are not correct. I made a fix as follows: [Image Removed] [Image Removed] ...

Image appears upside down when using Export Render Target on Android

Image appears to be upside down Bug was checked on production, engine version 4.25.3 and is NOT reproducible  Regression = yes ...

Volumetric fog rendering gets cut off at the apex for some spot lights when viewed from certain angles

Fix is found in licensee’s pull request:https://github.com/EpicGames/UnrealEngine/pull/10333/files ...

Thin Translucent rendering output is different on UnrealEditor/PC and PS5 with Ray Tracing enabled

Reported from UDN With RT Translucency and Reflections enabled, Thin Translucent rendering is incorrect on PS5 in UE 5.3 ...

The ConvertToDeviceZ in common.usf seems wrong

UBT crashes when doing an incremental build

There is a consistent crash when incrementally compiling headers containing generated code. The code for launching UHT accesses a property which is null when compiling with the UBT makefile. ...

Assertion failed: Engine crushes when a geometry collection hits a landscape

This is because THeightField::PhiWithNormal has not been implemented yet. ...

Clothing jumps on Content Examples-Animation

When in Content Examples' Animation map, the clothes of Owen on sample 1.3 can be seen jumping upward not in sync with any movement. ...