QtCreator never releases file lock (Windows)

Not sure what component is responsible for this. My workflow often is:

1. Add some CMake stuff. Does not change anything, so it must be cached.
2. Try to delete the build folder. QtCreator has a lock. Close the related/all projects. QtCreator still has the lock
3. After closing QtCreator I'm finally able to delete my build folder
4. Start QtCreator again

Now I have to do this every time CMake tries to be smart and caches some value Using Windows powertoys File Locksmith:

This lock persists as long as QtCreator is open.