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Nanite mesh materials go wonky on 'Play'

Hey all!

Loving working in UE5 (for the most part).

One big issue I’m having is when I import a mesh from Megascans, quite often the material goes wonky, and even sometimes just steals the material from another mesh.

This mostly happens after hitting the ‘play’ button, but also sometimes happens within the viewport. The way to fix it in the viewport is to select all objects, and once an object is selected, it corrects the material. After ‘play’, however, the material is still borked. I’ve tried rebuilding lighting to no avail.

Viewport High Rez Screenshot (correct material)

In-game (borked material)

In-game (borked after follow up play). Showing that it changes all the time.

GPU: 2070

Hey, i found a way that fixed that for me, at least in the free archviz scene,
i deleted my Skylight (doesnt work if you just hide it) then hit Play and that fixed it, then saved my scene.
And if you need the Skylight component i found that you can just add a new one after deleting the last one.
I dont know why this happens, i think it´s a bug.