Unreal Engine Issues
Unreal Engine Issues
Graphic Artifacts on AMD GPUs When Mesh is Scaled to Large Size
UE - Graphics Features - Apr 5, 2018This issue has been observed in 4.18.3 as well as 4.19. See attached screenshot showing scene from 4.18 on Nvidia, compare to attached GIF showing same scene on AMD card. ...
Child Widget Blueprint does not inherit bindings in exe
UE - Editor - UI Systems - Nov 16, 2018When packaging a project for Windows, Child Widget Blueprints do not inherit bindings. Tested in 4.20.3 (CL - 4369336), 4.21.1 (CL - 4567586), 4.22 (CL - 4572453) ...
Cannot use "ProjectName (Debug) (ProjectName)" debug configuration in VSCode on Mac with binary Engine installation
UE - Foundation - Core - Dec 3, 2018Attempting to debug in VSCode on a Mac using the ProjectName (Debug) (ProjectName) configuration fails due to a missing precompiled file in the binary Engine installation. REGRESSION: No. The same ...
Calling Console Commands in Python doesn't execute
UE - Editor - Workflow Systems - Feb 5, 2019The console commands do not execute from Python if optional PlayerController parameter is not filled. Tested in 4.20.3 (CL- 4369336), 4.21.2 (CL - 4753647), 4.22 (CL - 4902349) ...
Viewport breaks with Forward Shading, MSAA and Accurate Velocities from Vertex Deformation Enabled
UE - Graphics Features - Sep 13, 2019With Forward Shading, MSAA and Accurate Velocities from Vertex Deformation enabled the viewport breaks. If any of these settings are different, the viewport is fine again. Found in 4.23 CL# 838658 ...
Can't assign LightMapCoordinateIndex on Static Mesh with generated LODs
Tools - Jan 10, 2020Once a static mesh have generated LODS, the only lightmap index value the static mesh editor's UI accepts is 0. We should be able to set the index to any value between 0 and 3 as long as there are ...
Text Render Actor with Material Instance using Parameter crashes when playing Standalone Game
UE - Rendering Architecture - RHI - Aug 31, 2020Material Instance with Parameters on Text Render Actor causes crash when playing in Standalone. Reported and tested in version 4.25(CL 13942748). Works as expected in 4.24(CL 11590370). ...
Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling
UE - Editor - Workflow Systems - Jan 11, 2022This is a regression.This does not affect UE5. Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling. In 4.26 and UE5 the code compiles without issue, and the user ...
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...
The Delay node cannot be added to the StandardMacros bp in the Engine folder
UE - Gameplay - Blueprint - Jan 19, 2015The Delay node cannot be added to the StandardMacros bp in the Engine folder. However, the Delay node can be added to a new Macro Library bp and any Macro in an actor class blueprint. ...