Unreal Engine Issues
Unreal Engine Issues
"Build All Levels" does not re-AddNavigationSystemToWorld
UE - AI - Navigation - Feb 28, 2024The Build All Levels editor action cleans up the world's NavDataSet (UNavigationSystemV1::NavDataSet) as pre-rebuild world cleanup by calling: SetNavigationSystem(nullptr); inside UWorld::Cleanu ...
5.3 crashes when loading a map with an actor that had the class of one of its components changed
UE - Gameplay - Components - Feb 1, 2024Create a blueprint based on actor, give it a SceneComponent named ExampleComp (BP_TestActor) - this should be the blueprints only componentCreate a new level (TestMap), place an instance of the bluepr ...
A 5.5 level that contains a Text3DComponent in a BP crashes the engine when opened in 5.6 (and up)
UE - Virtual Production - Sep 11, 2025A 5.5 level that contains a Text3DComponent in a BP crashes the engine when opened in 5.6 (and up). The licensee has provided his analysis: Description: Level instance created in UE5.5 and re-saved ...
Niagara - "Make Static" nodes do not seem to be working correctly.
UE - Niagara - Apr 7, 2025When a "Make Static" node is used in a Niagara Function Script or Niagara Module Script to supply the input value for a Static Switch Selector or, a Function Parameter, or a Function Parameter Defau ...
The Category setting for widgets return to "Default" after compiling
UE - Editor - UI Systems - Aug 18, 2015When setting up categories for your widgets in the Event graph the categories will revert back to default after compiling the blueprint ...
Alt-tabbing out of a Standalone App or packaged version of a game does not trigger LostFocus or ReceiveFocus
Tools - Sep 9, 2015If a user uses Alt-tab to change to another window, the ReceivedFocus and LostFocus functions are not called as they would usually be called when using something such as Shift+F1 or Ctrl+Esc. Note: ...
Unable to erase duplicated foliage in WP map
UE - World Creation - Worldbuilding Tools - World Partition - May 23, 2022Unable to delete foliage after it's been duplicated in a WP map. ...
DestroyComponent(bPromoteChildren=true) does not try to use the socket name of a child when attaching it to the grandparent
UE - Gameplay - Components - Jun 20, 2018User reports that when we delete a component in the hierarchy and promote a child component in its place, we don't account for the socket name that the deleted component had used previously. ...
Editor crashes when the "Find in Blueprints" dialog runs its indexing task after any SlowTask was canceled by the user
UE - Framework - Blueprint - Sep 17, 2024If any SlowTask is canceled by the Editor's user, and later on the "Find in Blueprints" dialog is opened and needs to perform its async indexing task, the Editor crashes on thread FAsyncSearchIndexT ...
Python: rename_directory Fails to Work on Non-empty Directory
UE - Editor - Workflow Systems - Jan 24, 2023Directories can no longer be renamed via Python if they are not empty. ...