Unreal Engine Issues

Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way

The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...

Implied Decal Blend Modes don't properly account for Material Attributes usage

I've attached a project with the necessary materials that demonstrate this issue. I would expect that just because a Set Material Attributes node is inside a material graph it wouldn't affect the de ...

Vertex Interpolators broken in landscape materials

D:/Unreal/UE4_Release-4.27/Engine/Shaders/Private/LandscapeVertexFactory.ush(788,3-59): Shader FDebugViewModeVS, Permutation 0, VF FLandscapeVertexFactory[Image Removed]:/Unreal/UE4_Release-4.27/Eng ...

Groom bound to GeometryCache is unstable

This issue seems to occur only in 4.27 with DX12. Did not repro in 4.27 with -dx11, nor in UE5 DX11/DX12. ...

DefaultEditor.ini dirtied when UpdateSingleSectionOfConfigFile is called for an object containing an array property

Closing an AdvancedPreviewScene results in a call to UAssetViewerSettings::Save to save the preview scene settings, regardless of whether or not anything has been modified. This in turn calls Update ...

Crash when adding a streaming level to the world through Python

When using the Python plugin to add an existing level as a streaming level, the editor crashes. It seems that this happens regardless of what level is added or what the contents of that level are. A ...

Spectator pawn and player state missing references to each other during replay playback

When playing back a replay, the spectator controller's pawn and player state are missing references to each other, which is usually handled in APawn::PossessedBy. ...

Unicode Symbol issues on EditableText

Buoyancy is broken in UE5: even BP with Cube SM component (mass is 1kg) and default Buoyancy Component with one default Pontoon falls on bottom of lake

Shorter steps:Steps 1-8 from Steps to reproduce (create level with water body)Find BP_BuoyancyExample in Content Browser (Engine>Plugins>Water Content>Blueprints)Place BP_BuoyancyExample above the w ...

Crash when applying Post Process SceneTexture and VertexInterpolator as emissive color

When 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 ...