Unreal Engine Issues

UEditorEngine::AddPendingLateJoinClient checks original PIE/SIE state, not current state

When adding late joining clients, the engine checks the originally requested EPlaySessionWorldType, rather than checking whether or not the session is currently simulating or not. This means if the ...

MRQ - Skeletal Mesh motion vector are output only for the last sample of Spatial Sample Count

Skeletal Mesh motion vectors are output only for the last sample of Spatial Sample Count, while Static Mesh motion vectors are output in all samples. UDN: [Link Removed] Slack thread: [Link Remo ...

VRS Stereo Foveation is not working

Steam Sockets cannot create listen socket during non-seamless server travel

This seems to occur because the original listen socket is still around when the instance tries to create the new one, even though it has been marked for deletion. The issue does not occur when FStea ...

Temporal Super Sampling flickering temporal analysis visualisation mode indicates temporal analysis disabled for all objects on screen

This can also be observed while running in PIE mode using the console command "r.TSR.Visualize -2". It is not clear whether it is only the TSR flickering temporal analysis visualization that is exh ...

When a TSoftObjectPtr pointing to a const type is used as a parameter for a Dyanmic delegate, unreal marks it as deprecaded.

A change has been done to the TSoftObjectPtr class that warns when constructing a pointer-to non-const from a pointer-to-const. This change makes sense and is correct. Example: UTexture2D* Loade ...

Disabling bLerpUVs in Nanite Settings of Static Mesh causes texture warping in clusters

The licensee has identified a potential fix by changing if( Settings.bLerpUVs ) to if( Settings.bLerpUVs || UVIndex == 0 ) On line 389 of NaniteBuilder\Private\Cluster.cpp in UE 5.5 ...

[Legacy][FBX] Animation curves are not added to the skeleton anymore

Nanite foliage missing outline when selected

When a foliage actor contains instances of Nanite and Non-Nanite meshes, the Nanite meshes don't get a selection outline when the actor is selected.[Image Removed] ...

Normals and tangents do not get normalized when recompute is on during static mesh to skeletal mesh conversion.

When doing a static mesh to skeletal mesh conversion where the source object is an OBJ, if recompute normals or tangents is on, then the resulting normals and tangents will be broken. ...