The good news is: Removing the Config Folder seems to fix the problem
Bad news is: It resets the entirety of my project
I also tried verifying the files as you said and it didn’t do anything. Something must be wrong in the project configuration but I don’t know how I can fix that without losing everything in my project…
EDIT: It does work, like it allows me to use top view again bt the selection in Modelling mode is still broken =A=