I have had that Garage asset since it was released. I haven't noticed problems with it. But this difference does not surprise me. Most likely, the actual problem is with some asset or mod that you have but I haven't. The game uses shared texture atlases for assets, so assets are not isolated from each other.

If you can reproduce the problem using just a handful of assets or mods, so that I could realistically run exactly the same test here, then I would definitely like to hear about that.

@thale5

Hi thale! Thanks for your reply. I agree with you that my test wasn't precise, so I just did a minmum test again.

Wtih only two mods LSM and unlock all, I figured out that IFC GZ v3 https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1633845925 togther with the share options in LSM caused the problem. Either one being turned off will be fine. I will turn off that skyscraper for the time being, since your mod is more important. :)

Thanks! With IFC GZ loaded, my test city now has some black vanilla buildings. There are some black buildings even with share options disabled, so the root cause is not sharing.

The game gives a rare error message for IFC GZ:
LOD missing: IFCglass

I believe that is significant. Anyway, now I have something to investigate. Thanks for reporting!

What is interesting is that IFC GZ turns some vanilla buildings black even with LSM disabled. But now the black ones are not the same ones as before but different ones. This explains why, for some users, LSM seems to cause the problem while for some it seems to fix it.

I will look for the root cause anyway because I want to understand it and maybe produce a warning message about such assets.

Solved. IFC GZ contains sub-meshes. One of them, IFClogo, has a weird LOD texture size: 283 x 283. By resizing that texture to a power of two (256 x 256) all black textures disappear. This is with LSM and without LSM.

I plan to add a new section 'Asset errors' to the report provided by this mod.