Unreal Engine Issues

Light Leaking With Raytraced Shadows On Lights With Non-Zero Source Length

Light sources which have the source length attribute set to a value greater than zero seem to be leaking light through occluding geometry (see the image below and repro project). Moving it away from ...

AI MoveTo Blueprint node will zero velocity on Pawn when called, causing a freeze if the Pawn is already moving

AI MoveTo Blueprint node will zero velocity, causing a stop when a new destination is set if the Pawn is currently moving. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.1 (CL 3142249) F ...

PostRepNotifies may not always be called

FObjectReplicator::UpdateUnmappedObjects calls  CallRepNotifies, but does not call PostRepNotifies. Further, the order of CallRepNotifies and PostNetReceive in FObjectReplicator::UpdateUnmappedObje ...

Transformed convex collision generates wrong navmesh

[Link Removed] The mesh in the repro project contains a transformed convex collision, which can be moved freely in the mesh editor, so the transform must be applied in following code block. (Also se ...

Engine Source is no longer part of xcodeproj

Reported by a user on AnswerHub, but when creating a code project with Binary Install, the Engine source is no longer included/visible in the .xcodeproj. This does not occur on Windows with VS ...

Screen tearing with ARKit enabled applications

Screen tearing occurs when navigating the device around the AR space. ...

GetBoundObjects is not returning spawned objects when the playback start is nonzero

Regression in editor performance in D3D11

D3D11Commands.cpp is doing FName resolutions in the critical fast path. This looks to be a regression from the memory freezing refactor. ...

Assert when toggling RHIThread

VisionOS deferred renderer regression

Deferred desktop renderer does not function correctly on visionOS.  It did work in 5.4.  One problem is the r.XRMSAAMode setting forcing 4 samples even when not using msaa, but there are other probl ...