Unreal Engine Issues

When changing the Visibility of a RetainerBox wrapped widget to “Not Hit-Testable(Self&AllChildren)”, the widget incorrectly accepts the hit test

The result of changing the Visibility of a widget placed as a child of RetainerBox is not reflected. Here we have disabled hittest for the Button widget, but hittest is incorrectly accepted. This is ...

[AI] UE_MT_SCOPED_READ_ACCESS(NavElementAccessDetector) Fails in editor on fresh sync

Licensees have reported failed multi-thread access code for NavElementAccessDetector in complex levels that have not finished compilation of their static meshes. The eventual failed check is inside ...

In -game in Editor, if streaming-in a LevelInstance and initialize its world partition, then leaving that cell and make it go outside the streaming grid, to re-enter it again, will trigger a check(!StreamingPolicy) if no GC has happened during that time.

This crash can be fixed by adding a couple of || IsRunningGame() like it is done here:    FGenerateStreamingContext Context = FGenerateStreamingContext()        .SetLevelPackagesToGenerate((bIsPIE ...

Dumping of world partitioned HLOD stats fails in commandlet

Dumping of world partitioned HLOD stats in commandlets no longer works since updating to Unreal 5.5. The cause seems to be that the functionality has been moved from UWorldPartitionHLODRuntimeSubsys ...

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 ...

Shader info strings overlap in MaterialInstanceEditor and are unreadable

CL-35369646 changed the debug information string to span multiple lines, but the Y offset moves forward by only one line, so the string overlaps. ...