Unreal Engine Issues

Pie startup optimization: UWorld::PostDuplicate::ValidateTextureOverridesForPIE optimization

Here is a snap shot of the propose UDN change: TRACE_CPUPROFILER_EVENT_SCOPE(ValidateTextureOverridesForPIE); TSet<UMaterialInterface*> ProcessedMaterials;TArray<UPrimitiveComponent*> Components; ...

Interchange Scene: actor creation is not optimize

UInterchangeGenericLevelPipeline::ExecuteSceneNodePreImport is iterating all nodes for every actors it create. We need to cache the result. ...

Incorrect Lighting With Exponential Height Fog And Light Function Atlas

There currently is a mismatch occurring when light function atlases are used in conjunction with exponential height fog. When the flag r.VolumetricFog.UsesLightFunctionAtlas is enabled, light shafts ...

Crash in PlayReverse

Sequencer- FComponentMaterialInfo isn't exposed to Blueprint or script, leaving script users having to call deprecated paths

The ComponentMaterialTrack recently got upgraded to be able to animate parameters on different types of materials. This meant using an FComponentMaterialInfo to describe which material was being ani ...

Copy and paste from one sequencer to another does not work correctly

Copy and paste from one sequencer to another does not work as expected. Let say there is a certain folder structure like this;[Link Removed] Then you press Ctrl+A then Ctrl+C for copying and past ...

UI Flickers in Packaged Movie Render Queue builds

Visual Logger bForceUniqueNames does not result in unique names (regression)

Just a regression introduced with the VisLogger changes. ...

Light Complexity view mode crashes if there are hair cards in the scene

The Editor will crash if Groom Hair Cards are viewed with the Light Complexity View Mode. ...

Nanite mesh polygons disappearing when using masked opacity with vertex color in 5.4

In 5.4.3, a nanite enabled mesh with a material that takes its vertex color (R) and uses it as the opacity mask output in a masked blend mode material, causes the mesh to have disappearing polygons ...