Unreal Engine Issues

Skeletal Mesh does not deform as expected when Metal Desktop Renderer is ON

When using the provided UI to test the skeletal mesh morph, it doesn't work while using Metal Desktop Renderer. It works as expected when Metal Mobile Renderer is enabled instead. Working on repro ...

Lumen Software Raytracing has big lighting difference comparing to Hardware raytracing

VirtualHeightfieldMesh shadow issues

A UDN reported ensure being encountered with VirtualHeightFieldMesh rendering on UE5. Those ensures remain an issue on 5.1 (UE5/Main) as of CL 19779838. [Link Removed] Attempting to repro on PC, th ...

Actor Foliage can't be added to Foliage Paint or Single with World Partition maps

Actor Foliage can't be added to Foliage Paint or Single with World Partition maps. ...

Parameter distributions can be reset to None in Cascade Particle Systems, causing Cascade to Niagara conversion to crash the editor.

Cascade to Niagara conversion causes the editor to crash due to any distribution parameter in the Particle Emitter being reset to none. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL# 1831 ...

Inconsistent Hit Results with Landscape Physical Material

The physical material returned from the hit results of a line trace done on a Landscape using a physical material is not always correct. ...

Content Browser is not opened when clicking Browse to Asset from a docked to sidebar Details or WorldSettings window

Repro Ratio: 6/6 Regression testing in //UE5/Release-5.0-EarlyAccess CL-16682836 since this feature wasn't in UE4. This issue did NOT happen. This issue only seems to happen when the windows are ...

iOS package with Metal Desktop Renderer renders reflections incorrectly

When having Metal Desktop Renderer ON, the project renders incorrectly and shows a coloring/lighting issue on the character's reflection. ...

Montage Time Stretch Curves Scale Incorrectly

More details in attached UDN [Link Removed] Time stretch curve behaves incorrectly with large sections of in-between values. From the UDN: After using the feature a bit more we also noticed tha ...

Waking both of a constraint's rigidbodies re-enables collisions between constrained actors that were disabled by a Physics Constraint Actor

Waking both of a constraint's rigidbodies re-enables collisions that were disabled by the physics constraint You can also get this issue to occur by either shooting the two cubes around a bit, or by ...