Crashes when applying material on objects after changing UV mapping parameters with Lumen enabled.

TM - Core - Jun 20, 2024

Info from the user: "This is super basic, only just started to build the scene. I have modeled in Vectorworks 2024 Architect and imported it into Twinmotion via the export and not the live link. The ...

Search in Blueprint can encounter a deadlock condition when the window is closed before the search finishes and an FText lookup is pending

UE - Gameplay - Blueprint Editor - Jun 19, 2024

When a running search in all blueprints is closed, it may prevent an AsyncTask used to return the look up FText's from StringTables from running on the game thread, leading to a deadlock. When the ...

No warning for deleting an actor when its referencers are unloaded

UE - World Creation - Worldbuilding Tools - OFPA - Jun 18, 2024

Normally a warning appears to confirm references to an actor will be deleted. If the references are unloaded then no warning will appear. ...

Installed Editor doesn't package the right target if Marketplace plugin are installed before first launch

UE - Foundation - Core - Jun 18, 2024

Something is wrong with the TargetInfo.json file generated when they are some Marketplace plugin installed. The client reported this workaround:  Backup the plugins found in Engine\Plugins\Marketp ...

Renaming Niagara's emitter name in the Timeline panel causes a crash

UE - Anim - Sequencer - Jun 18, 2024

Renaming an emitter's name in Timeline panel of Niagara editor causes an editor crash. This happens because FViewModelHierarchyOperation constructor is called with null InAnyModel ptr; FViewModelHi ...

Displaying Revision control history for a file ending in an "undo" of a revision can cause a crash

UE - Editor - Workflow Systems - Jun 18, 2024

This crash is caused by how source control history is managed and shown. In this specific case the source control software is Perforce. As written in the repro steps, it can happen to any uasset tha ...

Crash on Unreal Editor Exit due to subclass of UEditorUtilitySubsystem

UE - Editor - Workflow Systems - Jun 18, 2024

Since UE5.4, it has been reported that if there's a class derived from UEditorUtilitySubsystem, the program crashes when the editor exits. This is because the code added in CL30853505 accesses freed ...

UMG: crash when a namedslot has content in a widget blueprint and its instance

UE - Editor - UI Systems - UMG - Jun 17, 2024

workaround: open WBP_A and remove its namedslot content to avoid having two contents in the same namedslot. ...