RVT Material Preview incorrect in Landscape paint target layers

There's a provided repro project: TestingProject (submitted by a licensee on UDN).

• Open map: Content > Landscape > NewMap.
• Go to Landscape paint mode.
• Target layers will show two layers each with identical Material previews.

[Link Removed]

How do I set a material as a post-processing material?

Do I need to call Destory method to remove components from Actor when Destory method to remove Actor?

How does TextureRenderTarget2D get TArray<uint8> type data?

How to delete some elements correctly when deleting an array loop?

Why does the REMOVE method of map container remove elements have memory leaks?

Where can I download the source address of the deployment cotum service associated with the PixelStream plugin?

What is the cause of the packaging error falling back to 'GameUserSettings' in ue5?

UMG RichText not appear image when packaged

What is the difference between Camera and CineCamera?

How to resolve the Visual Studio2019 compilation error of the project wizard build C++ project in ue5.3 release?