Ayfel

It might have to do with URP although I think it should work. Can you try loading the bundle without going through the server first to test things out? Also...

I believe this is the issue btw https://forum.unity.com/threads/unity-5-3-objects-in-scenes-loaded-from-assetbundles-are-losing-their-static-flag.377771/ Still looking into it to see if there might be an easy fix It also matches with what we observe as we...

Further exploration seems to show that the meshes are being stored without the UV1 information (which is used for lightmaps), I need to look to see if there is a...

This is most likely because of nested prefabs, try to only have a top root prefab to test it, no inside prefabs

Great, I am currently on a trip and wont be able to check it until bavk, if you haven't found the reason these days(i think if you unlink the nested...

Have you tried baking directly, without this script? Please check that you can bake directly without issues.

What material is the decal? (shader) Also have you tried on a build?

Does your instantiating as prefab work when you make a build? It does sound like the shader stripping (look at ReadMe) or some setting in your project. Let me know.

Cool, so that means it is just your settings, once you fix those it will be fine. Check the readme for the stripping modes

Does you prefab still have the static flag on?