Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_Core!FName::GetDisplayNameEntry() [unrealnames.cpp:894]
UE - Foundation - Core - Aug 14, 2017This is a trending crash coming out of the 4.17.0 release. The same callstack also occurred during the 4.11 release, but otherwise hasn't had an occurrence until now. Users have not provided any de ...
ChaosCacheManager is not reproducing Trailing Events
UE - Simulation - Physics - Mar 28, 2025ChaosCacheManager (CCM) is not reproducing Trailing Events. Particles set to track Trailing Events correctly follow the position of the trailing event when the Geometry Collection (GC) is physically ...
Fracture Mode > "Remove-On-Break" setting: Cluster Crumbling causes flickering
UE - Simulation - Physics - Destruction - May 10, 2025Fracture Mode > "Remove-On-Break" setting: Cluster Crumbling causes flickering. Once the Remove-On-Break Cluster Crumbling effect is activated, there is a small delay between the disappearance of th ...
glDebugMessageControlKHR in InitDebugContext() causes Zenfone 5 app crashes on launch
UE - Platform - Mobile - Dec 15, 2015Game applications crash on Zenfone 5 once they're launched. This seems to be due to the InitDebugContext(). Chris requested this to be entered for tracking purposes. Chris B: I believe the problem ...
Crash when adding Actor Array Element to a Sequencer Event Struct
UE - Anim - Sequencer - May 25, 2017Crash when adding Actor Array Element to a Sequencer Event Struct Error message: Assertion failed: 0 [Link Removed] [Line: 56] Source Context: 42 N = FName(*StringName); 43 ...
References to Data Assets that inherit from Blueprints may be broken during reinstancing
UE - Gameplay - Blueprint - Nov 30, 2020It is possible to create new Data Asset instances in the editor that inherit from a blueprint-defined subclass of UDataAsset. This flow is not very well supported, and generally it is safer to just ...
AssetRegistry has poor performance when a large map is resaved: Directory IO
UE - Foundation - Data Pipeline - Cooker - Mar 10, 2025IO cost of directory scans is one of the costs present in the AssetRegistry when a large map is resaved. Maps can have external actors which all have to be rescanned and reported to the map for incl ...
Blueprint classes are listed in Object pickers, but will not work as expected
UE - Gameplay - Blueprint - Jul 28, 2020Because of the way blueprints are implemented, the "Blueprint Class" asset actually points to the editor-only UBlueprint object. Because of this, all blueprint classes will show up as options for ge ...
UDataLayerManager::Initialize perf issue in Editor build
In editor, WorldDataLayers acceleration table used to map DL Names to DL instances is not created. The main reason was to avoid to handle all the case where it would need to be updated. When UDataL ...
[CrashReport] UE4Editor_Engine!ULevel::GetWorldSettings() [level.cpp:1643]
UE - Gameplay - Aug 21, 2017This is a common and longstanding crash that has occurred since at least 4.12. User descriptions cover a variety of actions. User DescriptionsCompiling a playerblueprint with firing logic and advan ...