Unreal Engine Issues
Unreal Engine Issues
When SimpleLink and SmartLink are enabled, CustomLinkId is sometimes missing.
UE - AI - Navigation - Jun 21, 2022If trying to find NavLinkProxy with SimpleLink and SmartLink enabled by searching the path, sometimes CustomLink is not found (CustomLinkId=0). Since only one NavLinkProxy is located on the level, ...
3D Grass may not appear in Path Tracer renders
TM - Rendering - Sep 19, 2025Reported in SF [Link Removed] Path Tracer renders of images with 3D grass may not display 3D grass in the foreground of an image. The 3D grass material will not appear or may appear to cut off at s ...
Widgets always come in to viewport with a zorder of 0 after being removed and added back
UE - Editor - UI Systems - Apr 8, 2015If a widget is removed from parent and then gets added back to the screen later it will come in with a zorder of 0. ...
Widget "Listen For Input Action" executes on unexpected input event
UE - Editor - UI Systems - Feb 19, 2020Listen For Input Action firing erroneously. Confirmed in 4.26 MAIN @ CL 11536993 ...
LIVE: On MAC, Atmospheric Fog Preview Renders Incorrectly with Default Settings
UE - Platform - Apple - Nov 14, 2014On a Mac, Following the tutorial located here: https://answers.unrealengine.com/questions/132223/macbook-pro-preview-rendering-issues.html When opening a new level, the atmospheric fog renders soli ...
promoting a variable to a local variable in another blueprint creates compile error.
UE - Gameplay - Blueprint - Sep 30, 2015If a local variable set variable is copied/pasted over to a second blueprint and the input pin is promoted to a local variable, compiling the blueprint will cause a compile error to appear until the ...
Keyboard shortcuts are not responding in Persona
OLD - Anim - Jan 12, 2017Some keyboard shortcuts are not working in Persona. Seems like the anything that is inputted under Animation in the keyboard shortcuts are not working as expected. The only shortcut that seemed to ...
Crash when moving actor on viewport with HierarchicalInstancedStaticMeshComponent.
UE - Gameplay - Components - Aug 28, 2017Create ActorBP has StaticMesh is not assigned to HierarchicalInstancedStaticMeshComponent. Place this actor on the level, and bind the StaticMesh from the Detail tab and add the appropriate Instance ...
Address Sanitiser in MSVC incorrectly identifies a non-virtual destructor, but the class is not polymorphic
UE - Rendering Architecture - Shaders - Jun 11, 2024When built with Address Sanitiser, the engine can except in FShaderPipeline::FindOrAddShader on deletion of the Shader pointer. This appears to be in error as FShader is asserted to be non-polymorp ...
Invalidation panels can retain stale hittest data when caching is disabled/enabled
UE - Editor - UI Systems - Slate - Aug 20, 2024Changes to the hit test grid of an invalidation panel while caching is disabled won't be respected when caching is reenabled. This can cause interactive widgets such as buttons who were set to colla ...