Unreal Engine Issues
Unreal Engine Issues
LIVE: A Local Variable cannot have its type changed if another local variable with the same name in a different function is in use
UE - Gameplay - Blueprint - Nov 6, 2014Two local variables with the same name in two different functions still interact with each other in some way. This was reported in TTP 346132 and fixed in that case, but currently if a local variabl ...
Crash when pressing Ctrl-Z after creating a blueprint function
UE - Gameplay - Blueprint - Feb 20, 2017Crash when pressing Ctrl-Z after creating a blueprint function *This is a regression: Working in 4.14.3-3249277 Not working in 4.15.0-3299760* Crash Reporter: Error message: Access violation ...
Static lighting issues with foliage
UE - World Creation - Worldbuilding Tools - Foliage - May 28, 2016The user reports a scene with a reasonable number of foliage instances renders with black lighting: After updating to 4.11 (.1 or .2 doesn't matter) I have not been able to bake my lighting properl ...
Set functions in UWindDirectionalSourceComponent are not exposed to be called from code
UE - Gameplay - Components - Oct 4, 2018None of the Set functions in the UWindDirectionalSourceComponent are able to be called from code. The functions can be called from Blueprint, but without the ENGINE_API macro, none of the functions ...
Pasted material function nodes lose their connections
UE - Rendering - Architecture - Materials - Dec 3, 2019The fix for [Link Removed] caused a regression where links to material nodes no longer carry over when a group of nodes is copied and pasted ~ User submitted Image and repro steps appended. I conf ...
Rect Lights does not illuminate Volumetric Fog except at extreme intensities
UE - Graphics Features - Jul 9, 2018Rectangular Area Lights require extremely high values in order to illuminate Volumetric Fog and Volumetric Materials. This means they do not appear to match the output of other light types of identi ...
Converting a big function to a custom event places the nodes in a messy location
UE - Gameplay - Blueprint - Oct 8, 2019The nodes of a big function are placed over the custom event node and other nodes in the Event Graph when the function is converted to an event. ...
The CopySkinnedModelData() function is no longer called from anywhere in the Engine
OLD - Anim - Apr 11, 2018The CopySkinnedModelData() function is no longer referenced by any code in the Engine as of 4.19. The function should either be marked as deprecated or removed from the Engine. ...
A Pass-by-Reference function input cannot accept a reference to Self
UE - Gameplay - Blueprint - Dec 30, 2014A Pass-by-Reference function input cannot accept a reference to Self. Workaround: Cast from Self to the desired class and use that for the function's input. ...
Call In Editor functions not working in blueprints
UE - Editor - Developer Usability - Dec 19, 2025Context When selecting a component on an actor, any CallInEditor functions on the component's class appear as buttons in the details panel. Problem The CallInEditor functions don't execute in Blu ...