Re: The sims 4: Highschool years bug
I have this problem as well. My game is repaired, I uninstalled all mods (only MC Command Center in my case), I don't use any CC and deleted the local thumbcache as I was advised in another bug report I did. I'm still testing the other issue I had but this one was happening as well and it persists even now.
To be more precise, these build&buy items became invisible/transparent a while ago:
High school locker (Locker from High School Years EP)
EZPZ shower stall - by Umpa Loofa (Shower from Discover University EP)
Barellwood shower (Shower from Horse Ranch EP)
As you can hopefully see on the images, lockers are still partially visible but the showers are completely invisible and only a shadow on the floor remains. When I click on them, their outlines appear (the second screenshot was made in the Foxbury university housing that came with Discover University so there should be a row of showers).