Unreal Engine Issues
Unreal Engine Issues
Instanced object in an array property of an actor component is invalidated and marked for garbage collection on undo
UE - Gameplay - Jun 4, 2024If an actor component contains a TArray of instanced objects, some of those object instances can get incorrectly invalidated and marked for garbage collection in certain situations, possibly resulti ...
WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined property (bSimulatePhysics), throws an error
UE - Framework - Apr 15, 2025WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined class property (bSimulatePhysics), throws an error in the logs: LogEditCondition: Error: EditCondition pa ...
Fog Does Not Behave As Expected in Splitscreen
UE - Graphics Features - May 25, 2018This bug seems to repro very inconsistently for me, but I've seen it affect Atmospheric Fog and Exponential Height Fog, and reproduced in 4.18.3, 4.19.2, and Main CL 4093338. I've attached Config fi ...
World Partition Editor minimap build failed
UE - World Creation - Worldbuilding Tools - Aug 10, 2023The issue was reproduced when building a minimap for an open world level with no Actors with "Is Spatially Loaded" enabled. Placing additional Actors with "Is Spatially Loaded" enabled in the level ...
When the Initial Position of an Animation Asset is entered outside the expected range, the animation gets stucked and does not refresh.
UE - Anim - Runtime - Mar 18, 2024The animation gets "corrupted" when the Initial Position value has an invaildad value. In this case, this means that the Initial Position value is outside the range of the duration of the Animation. ...
Copy/pasting a Custom Event that has input names containing spaces will create a Custom Event with extra inputs
UE - Gameplay - Blueprint - Feb 4, 2015Copy/pasting a Custom Event that has input names containing spaces will create a Custom Event with extra inputs. It appears that an input name with a space in it will be copied as two inputs, the fi ...
[CrashReport] UE4Editor-Slate!FSlateApplication::OnMouseUp(EMouseButtons::Type,FVector2D) [SlateApplication.cpp:5321]
UE - Anim - Rigging - Feb 15, 2021Generated from CrashReporter User information:Tried to choose f_med_brw_body_skmesh for the retargeting pose as mentioned at: https://docs.unrealengine.com/en-US/Resources/Showcases/MetaHumans/Reta ...
Users are unable to create projects when the default project location is a networked drive
UE - Editor - Workflow Systems - Oct 23, 2024There have been multiple reports of this issue, particularly from schools, over the last 10 years:https://forums.unrealengine.com/t/invaild-folder-path-with-network-user-drives/283475https://forums. ...
Video material previews incorrectly on Mac
TM - Rendering - Apr 3, 2025Received multiple reports of users on Mac computers experiencing issues previewing video materials in Twinmotion 2025.1. When adding video materials to the scene, the scale seems to be incorrect an ...
Self-Shadowing changes when click on and off an actor
UE - Graphics Features - Jun 19, 2015Given a Movable Light with a Movable Mesh with enabled Self Shadow Only, the mesh will not cast inset shadows (despite this option begin forced to true according to Tooltip) unless the mesh is selec ...