Unreal Engine Issues

Pressing ESC while on a drag operation makes drag visual to be disappeared and OnDragCancelled not to be called.

DragDropOperation is removed when pressing esc button. but this is skipping OnDragCancelled so it can disrupt user's UMG drag operation logic.  ...

Foliage Lightmaps are incorrect when using a Lighting Scenario and running as standalone

VR Splash screen delta rotation does not appear to update

When using the node Add Loading Splash Screen the delta rotation does not appear to update/rotate the texture that is applied as the tool tip appears to suggest ("(in)" Incremental rotation, that is ...

4.23 UpdateGrass took twice time than 4.22

UMG Crashes When Using "Create Dynamic Material Instance" With An Optional Name Twice

When using an Optional Name parameter in Create Dynamic Material Instance while using the same Optional Name twice in UMG the engine crashes. I have tested this in a actor blueprint that applies th ...

NavModifierVolume's FailsafeExtent is applied to the wrong area

The FailsafeArea of NavModifierVolume is generated at a different location from the center of the actor when it rotated. This means that the effect of rotation is incorrect. (see attached file) W ...

Volumetric Translucent Shadow not showing in game mode

Volumetric Translucent Shadow not showing in game mode for versions 4.23-4.25.  Reported and tested in versions 4.25.3(CL 13942748), 4.24.3(CL 11590370), 4.23.1(CL 9631420), 4.22.3(CL 7053642). Wor ...

Crash editing Transition Logic after deleting State and Transition in State Machine

Attempting to click on a node in a Transition Logic that has been opened in a new tab will cause a crash when the correlating State node and it's transition have been deleted from the State Machine. ...

GPU Timeout when using a large scale Landscape and Water Body Ocean

Regression: Tested in //UE5/Release-5.0, this issue does not occur so regression is yes. The GPU Timeout only occurs in UE5/Release-5.1, as recreating this issue in previous versions of the editor ...

Niagara Parameters window resets when clicking in a Scratch Module

Regression: The UI for the Parameters window in a Niagara System is different from UE5/Release-5.0 to UE5/Release-5.1, so the issue cannot be replicated in Release-5.0 This issue occurs when going ...