Unreal Engine Issues
Unreal Engine Issues
Components copy/pasted from an actor instance's SCS can't be deleted from a Blueprint
UE - Gameplay - Blueprint Editor - Jan 31, 2023SCS added components pasted from an actor instance in the level editor cannot be deleted from the target Blueprint because the component template has the RF_ArchetypeObject flag. ...
LogRenderer errors produced when using the restore button in viewport
UE - Graphics Features - Jan 11, 2017When using the restore button to obtain orthographic views of the scene the output log spits out several errors:LogRenderer:Error: No Color LUT texture to sample: output will be invalid. LogRendere ...
Renaming a variable in the variables tab occasionally creates new variables
UE - Niagara - Nov 7, 2018Here you can see two similarly named variables. One contains debug in the name and the other does not. The one that does not was generated after I attempted to rename the variable in the variable pa ...
Invalid GUIDs on new material instance parameters cause overrides to break on base param rename
UE - Rendering Architecture - Materials - Sep 3, 2025When a parameter value is assigned on a newly created material instance (constant or dynamic) using Set***ParameterValueInternal, the parameter’s ExpressionGUID is left invalid (0,0,0,0). Parameter ...
Crash trying to delete an actor after undo/redo adding a component
Tools - Feb 1, 2017Not a regression as it occurs in 4.14.3 ...
Crash When Renaming a Duplicated Collapsed Node Graph With an Asterisk in the Name
UE - Gameplay - Blueprint - Sep 20, 2017A crash is occurring if you collapse a node and name the collapsed graph something that contains an asterisk. The crash occurs if you copy and paste the collapsed graph, then attempt to rename it. I ...
Deleting a function in a parent class that is over written in a child class will cause a crash
UE - Gameplay - Blueprint - May 7, 2015The editor crashes after deleting a function in a parent class that has been implemented and over written in a child class. ...
Unhovered event occurs twice with 3D Widget when button is pressed and held
UE - Editor - UI Systems - Jul 21, 2017When using a 3D Widget that is a button when you press and hold a button and move off of the widget and let go of the mouse the engine registers a second unhovered event. Engine Version tested 4.1 ...
Renaming assets hits an ensure related to circular redirect
UE - CoreTech - UObject - May 10, 2024You will hit the ensure condition: LogOutputDevice: Error: Ensure condition failed: !SeenPaths.Contains(CurrentPath) in Engine\Source\Runtime\CoreUObject\Private\Misc\RedirectCollector.cpp] [Line ...
Cannot use a material instance to "Replace Reference" when deleting a material that is assigned to an image widget
UE - Editor - UI Systems - Mar 12, 2015Material Instances are not given as options when assigning a replacement material to a UMG image widget after the original material was deleted. ...