Unreal Engine Issues
Unreal Engine Issues
"StaticFindFirstObject: Ambiguous object name" on delegates with timelines in packed level actors
UE - World Creation - Worldbuilding Tools - Level Instances - Jan 31, 2024Regression: Crash when saving the level blueprint of a world-partition map containing any node with an unconnected input pin of type "Gameplay Attribute Structure"
UE - Gameplay - Gameplay Ability System - Feb 19, 2025In UE 5.5, when the user attempts to save the level blueprint of a world-partition map, the Editor crashes if the BP contains any node with an input pin of type "Gameplay Attribute Structure", as lo ...
Creating 3 player splitscreen causes viewport to go black on PIE
UE - Graphics Features - Feb 13, 2015If a game is set to play with 3 player splitscreen, starting the came will cause the viewport to go completely black. Does not occur with 2/4 players. Does not occur in standalone ...
Collison and Simple Collision Mip Level Crash
UE - Graphics Tools - Terrain - Landscape - Mar 21, 2023Niagara Fluids Plugin creates a memory reference of any saved level by only being active, before being actually used.
UE - Niagara - Aug 21, 2024While Niagara Fluids Plugin is active it creates a memory reference of any saved level regardless of being actually used. Simply enabling the plugin shows a memory reference while deleting the level ...
Crash when displaying lumencards on map with many objects
UE - Graphics Features - Lumen - Aug 1, 2025There is a thread conflict between FRDGBuilder execution in Background Worker and LumenVisualizer's LumenCard add/delete process. When lumen cards are displayed in a scene with many objects, a crash ...
DiffuseIndirect_Lumen_3 parameter missing and causing crash with Screen Space reflections and Lumen Async Compute
UE - Graphics Features - Lumen - May 3, 2025When the Reflection Method is set to Screen Space and Lumen reflections async compute is enabled Unreal will crash because DiffuseIndirect_Lumen_3 parameter missing, due to how DenoiserOutputs are o ...
Memory Leak in Actor Component Blueprints
UE - Gameplay - Blueprint - Dec 2, 2015Slow memory leak occurs after opening Actor Component blueprints. ...
USplineComponent::FindLocationClosestToWorldLocation does not function correctly with non-uniform scale
UE - Gameplay - Components - Jul 19, 2022Licensee reports incorrect results with FindLocationClosestToWorldLocation when used with non-uniformly scaled spline components. ...
Changing number of existing UHierarchicalInstancedStaticMeshComponent in Blueprint causes crash.
UE - Graphics Features - Oct 14, 2016If using a UHierarchicalInstancedStaticMeshComponent in a C++ class and adding instances via the OnConstruction( ) function, editor can crash. ...