Unreal Engine Issues

Crash after activating the game in debug camera mode

This behavior occurs in Standalone mode. After activating game, the information board for the game changes its meaning ( numbers of players and time set to 12:00) , but editor immediately freezes fo ...

Assertion thrown when connecting a World Position node to the time input of a Panner node then connecting it to Base Color

Assertion thrown when connecting a World Position node to the time input of a Panner node then connecting it to Base Color. This is a regression. ...

GameplayDebuggerCategoryReplicator can be unexpectedly hidden on clients

The GameplayDebuggerCategoryReplicator calls SetActorHiddenInGame(!bIsLocal) during its BeginPlay, so this actor is hidden on the server but visible on the client. However, bHidden is a replicated v ...

Editor fails to p4 add actor asset when WP map is checked out

Changing the world setting (or possibly anything that dirties a map) of a World Partition map that has been checked out by another user and then adding a new actor will cause the Save prompt to not ...

Lumen Software Raytracing has big lighting difference comparing to Hardware raytracing

StreamingLevels are not marked pending kill causes missing necessarily object references cleanup

World-space widget components drawing at desired size won't draw any smaller than 100x100

Widget components set to "draw at desired size" won't draw any smaller than 100x100. This looks to be related to the hard-coded desired size of the SPopupLayer (callstack attached). This problem did ...

Layer's preview weight does not have an affect on the Preview Material for Landscape Layer Blend nodes

Layer's preview weight does not have an affect on the Preview Material for Landscape Layer Blend nodes. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the preview window did g ...

[MRQ] Simulating in editor during runtime rendering causes an assertion to fail after rendering is done

Simulating in editor during runtime rendering causes an assertion to fail after rendering is done. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did not occur there ...

VirtualHeightfieldMesh shadow issues

A UDN reported ensure being encountered with VirtualHeightFieldMesh rendering on UE5. Those ensures remain an issue on 5.1 (UE5/Main) as of CL 19779838. [Link Removed] Attempting to repro on PC, th ...