ExportMaterialUVDensities() gets the incorrect value where the alpha channel is referenced

UE - Rendering Architecture - Materials - Apr 16, 2024

ExportMaterialUVDensities() gets the incorrect value where the alpha channel is referenced (e.g. RegisterIndex of the texture is [3] or [7]) because FMeshRenderer::RenderMaterialTexCoordScales() use ...

Ocean spline impacting landscape way outside of its bounds

UE - Graphics Tools - Terrain - Water - Oct 4, 2024

From licensee: "[...] it seems that regardless of our settings and how far away the control spline is from the landscape edge, one corner of the landscape will always be impacted by the falloff and ...

Landscape Layer Blending Painting Issue

UE - Graphics Tools - Terrain - Sep 10, 2025

There are two issues when painting landscape layers.Paint: When painting between different layers, square-shaped artifacts or splotches appear.Fill Layer: The blended weights of other layers aren't ...

AddTimedDisplay causes crash when changing level

UE - Gameplay - Dec 8, 2022

RemoveAfterSecondsLambda in AddTimedDisplay function may access released memory during level transitions. The following workaround works : void UViewportStatsSubsystem::AddTimedDisplay(FText Text, ...

Buffer Visualization for DecalMask is missing

UE - Graphics Features - Feb 29, 2016

The Buffer Visualization for DecalMask is no longer an option. Also, when looking at the Buffer Visualization Overview the DecalMask slot has been removed. See attached image for comparison Worke ...

Crash when TSR history separate translucency enabled

UE - Graphics Features - Mar 1, 2023

Custom Events can't be called after changing level blueprint or switching maps

UE - Gameplay - Blueprint - Dec 23, 2014

Custom events cannot be called as functions after being made in level blueprints or after changing levels. User must close and re-open editor to be able to call a custom event. ...

The Show Collision option in the Viewport does not show all collision during Simulate

UE - Simulation - Physics - Jan 30, 2015

The Show Collision option in the Viewport does not show all collision during Simulate. ...

Some post processing features in Preview Scene Settings do not update immediately

UE - Gameplay - Jul 28, 2016

In Persona or the Static Mesh Editor, some post processing features do not update immediately when the user changes them. This was seen with Color Grading and Lens Flare settings. It could affect ...