Unreal Engine Issues
Unreal Engine Issues
Ray Tracing Translucency in a Post Process Volume breaks in Lit viewmode
UE - Graphics Features - Ray Tracing - Apr 15, 2024Encountered a strange issue where switching to RT Translucency on a PPV would cause it to appear incorrect. However, if you swap the viewmode to Path Tracing, it does appear correct. See screenshots ...
Lumen Reflections in Stereo are broken after Nvidia GPU Driver Update
UE - Platform - XR - Jul 29, 2024After updating the NVidia graphics driver to v.552.74+, reflective/mirror materials appear broken and render with black and white lines in VR mode if they are in a level with a Post Process Volume w ...
GetStaticComponentMaskParameterValue returns the value for Static Switch Parameter
UE - Rendering - Architecture - Materials - Apr 24, 2026UMaterialInterface::GetStaticComponentMaskParameterValue gets the parameter value from the static switch list instead of from the StaticComponentMask list GitHub branch 5.8 still looks to have this ...
Dragging the Translation Widget in Perspective Viewport on Mac in a second monitor does not translate the selected Actor
UE - Platform - Apple - Nov 11, 2014Dragging the Translation Widget in Perspective Viewport on Mac does not translate the selected Actor, and when dragging is released the cursor is moved to the top left corner of the Viewport. Happen ...
Scroll Bar does not Stay "Anchored" to Bottom While Data Generates in Window
Tools - Jun 6, 2016The scrollbar no longer remains anchored to the bottom of the Output Log while more lines are propagated during the packaging process/ Regression: this does not occur in previous versions of the En ...
Go To Definition fails quietly for Native functions with no definitions
UE - Gameplay - Blueprint Editor - Aug 11, 2017Go To Definition fails for Set and Map Utility nodes (does not seem to affect Arrays). A warning similar to the following appears in the output log:LogSelectionDetails: Warning: NavigateToFunctionS ...
Light Propagation Volume Occlusion Intensity not working as intended
UE - Graphics Features - Oct 26, 2017Light Propagation Volume Occlusion does not affect scene as it should. The workaround in 4.17.2 is to disable DBuffer decals which will enable the Light Propagation Volume Occlusion. Occurs in 4.1 ...
ObjectScale returns a Cascade Mesh particle's XYZ scale as 1.0
UE - Niagara - May 13, 2020Sampling a Cascade Mesh Particle's scale always returns XYZ as 1.0 This is a regression from UE4/Release-4.24. This does NOT affect Niagara Mesh particles. I've attached a Cascade (left example ...
Crash when applying Post Process SceneTexture and VertexInterpolator as emissive color
UE - Rendering - Architecture - Materials - Jun 22, 2021When selecting apply after connecting a Post Process SceneTexture and a VertexInterpolator into the emissive color node a crash occurs. This issue is occurring in Binary //UE5/Release-5.0-EarlyAcce ...
Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints
UE - World Creation - Worldbuilding Tools - Level Instances - Oct 27, 2022This is not a regression. Tested in //UE5/Release-5.0 CL 20979098 Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints. Rerunning the Build > Pack Level Ac ...