Description

When a slate element that uses a png with a transparency the edges have a black outline. When the Widget3DPassThrough material is applied to the widget the effect is lessened, but is the outline still there.

An example project is attached.

Found in 4.23.1 CL#9631420
Reproduced in 4.24 CL# 10570792, 4.25 Main CL#10646676

Steps to Reproduce

1. Import a png with colored transparency (TestPNG).
2. Create a widget with a full sized image that uses TestPNG (TestWidget).
3. Create an actor with a world space widget component that uses TestWidget.
4. Apply the Widget3DPass to TestWidget.
5. Place the actor in the world.

Result: The image has a black outline.

Expected: The image doesn't have a black outline.

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Won't Fix
ComponentUE - Editor - UI Systems
Affects Versions4.234.244.25
CreatedDec 13, 2019
ResolvedAug 27, 2021
UpdatedAug 27, 2021
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