Unreal Engine Issues

Instanced static meshes fire an erroneous performance assert about loose parameters.

 "This ensure is intended to catch regressions where rendering programmers add a loose parameter to LocalVertexFactory, breaking dynamic instancing on regular static meshes.  InstancedStaticMeshes c ...

Can't add a subsequence binding for a camera cut through sequencer scripting

HLOD CalculateOverlap crashes when spheres barely overlap

The engine will crash when cluster bounds barely overlap. ...

HDRI Backdrop Actor not working on mobile

The new HDRI Backdrop actor does not appear to be functioning on mobile. ...

Crash opening FaceARSample on iOS

FaceARSample is crashing as soon as it is opened on iOS. Tested on a iPhoneXS 12.4.  Regression: Yes I was able to get FaceARSample on the same device the previous release 4.22. ...

Setting Fullscreen Mode to "Fullscreen" results in Crash when using 4.23 from source

Changing the screen settings to Fullscreen through code or blueprints results in a crash. This only happens in the source version of 4.23 and does not occur in the binary version of 4.23. I have att ...

Staticmesh SectionInfo map is reset when changing LODGroup

GetClassDefaults node retains 'hidden' references to original default.

Need to add calls to Super::PinConnectionListChanged() and Super::PinDefaultValueChanged() in K2Node_GetClassDefaults.cpp. ...

Character actor with simulated physics using an Anim Instance blueprint does not preview when scrubbing through sequencer timeline

A character actor using an AnimInstance blueprint will not update in editor when scrubbing ...

[Feature Request] New InstancedStaticMeshComponent API: Add Multiple Instances

Licensee says that adding multiple InstancedStaticMeshComponent instances can be very slow (main bottleneck being the physics building). I think there's a good case for a method something like:   ...