Unreal Engine Issues

MRG - Additional Post Process Render have a black alpha channel

Additional Post Process renders always have a black alpha channel ...

Landscape HLODs are broken in 5.7.2 (Github Release branch)

Landscape HLODs are broke when build from Editor. See repro steps above. I have not provided a repro project as it uses the open world starter map. Note that current Main has additional bugs that o ...

Chaos Cloth - Multiple issues with convex colliders

Issue 1: Convex Collision Transformation Missing for External Collision Sources Issue 2: Convex CCD Stability Issues due to Plane Intersection Semantics See attached URL for more details. ...

Object Columns using soft asset references will return null results

We have encounter an issue in the Chooser when we setup output object column for soft reference object ptr (an optional montage object). It is working correctly when the montage is loaded. But befor ...

Animation compression deadlock

The deadlock occurs when attempting to cancel compression during animation sequence destruction. The compression thread ends up deadlocking with the game thread, which is the one requesting the canc ...

Possible leak related to using Nanite meshes for Landscape

A licensee reported that the Bulk data for the nanite mesh generated for Landscape proxies can leak in the editor. It could appear as the normal BulkData “leadk” related to fulling loading an Asset ...

Adding weights to bones doesn't properly update skeltree

Rounding of conversion of anim length into frames add an empty frame to the animation

cf. https://forums.unrealengine.com/t/gltf-import-bug-animations-have-an-entire-extra-frame-when-source-animation-is-slighly-above-target-length/2697309 The GLTF importer adds an extra frame to the ...

"Could not find static actor" errors on standalone editor client when connecting to PIE server

This seems to be due to how FObjectReferenceCache and UEngineReplicationBridge handle remapping object paths for PIE. When creating the object reference handle, the object’s path should get renamed ...

Approximate HLOD: Default materials are not compatible and get rejected by FMaterialUtilities::IsValidFlattenMaterial when forcing their use

The Approximated Mesh HLOD layer cannot use its default materials: FullMaterialBakeOutputMaterial_PackedMRS and FullMaterialBakeOutputMaterial. The Param2D names are incompatible and the materials ...