Missing glass in glass roofing (Glimmerbrook & Forgotten Hollow)

Status report / Possible solution ... kind of...

Ok, I don't know exactly what was the solution for me but...

1. I repaired my game via Origin
2. I let the game create a full new Sims 4 folder
3. I started a brand new save file

And it worked for me. I downloaded the lot which I put on the gallery for Crinrict and now glass roofs and doors looks nice - without and with CC/mods in game.

But here comes the twist. I put an old save file into save folder because I wanted to play with this one ... and there the issue still occurs. Maybe my old saves were broken, I don't know. I'll go to save all my lots of this savegame and start over again.

Thanks anyway @crinrict for all your help 🙂