Unreal Engine Issues
Unreal Engine Issues
Nanite Landscape crash on save
UE - Graphics Tools - Terrain - Landscape - May 21, 2024UDN description:When landscape is flagged as Nanite enabled but nanite mesh has not been built yet, a save operation (or an auto save) triggers a fatal failed check in ULandscapeNaniteComponent::Ini ...
Opening / Compiling class with ChildActorComponent causes the ChildActor package to be marked dirty.
UE - Gameplay - Components - Mar 24, 2017Looks like this is a problem where the Actor is Duplicated due to constructions scripts running. Later, when the duplicate is destroyed all of its components will call RemoveOwnedComponent as they'r ...
CurrentTransaction ensure when duplicating an EQS generator
UE - AI - Aug 3, 2018When duplicating a Generator inside an Environment Query, the action triggers an ensure and stalls the Editor for a few moments. This issue was reported and tested in 4.19.2 (CL-4033788). It was r ...
Crash when running "MAP REBUILD ALLVISIBLE" with hidden sublevels and then changing maps
UE - World Creation - Worldbuilding Tools - Sep 1, 2025Running the MAP REBUILD ALLVISIBLE editor command when the current map contains hidden sublevels causes a crash upon changing maps. The issue seems to be related to hidden sublevels being cleared in ...
Crash importing layered materials from 4.25 to 4.26/4.27
UE - Graphics Features - May 26, 2021Blueprints from UE4 with dangling delegate reroute node crashes on UE5 load
UE - Gameplay - Blueprint Compiler - Dec 22, 2023If a project from UE 4.27 or earlier has a blueprint with a reroute node dangling (no outgoing connection) from a Custom Event Node's delegate pin (red), this blueprint will crash when loaded in UE ...
Editor crashes when edit foliage assigned to data layer in foliage mode
UE - World Creation - Worldbuilding Tools - Foliage - Apr 29, 2022Material Editor Crash occurs on mathematical operation node receiving invalid input from a Texture Object
UE - Rendering Architecture - Materials - Apr 11, 2023Crash closing the TM_Landscape map in the editor
UE - World Creation - Worldbuilding Tools - Foliage - Apr 18, 2017The editor is crashing after closing the TM_Landscape level This is a regression from 4.15.2 ...