Bug Editor Bug floating empty window

Hello, i am pretty new to unity, i'm a stuudent.
I've been working with pro builder which is great. However, last night unity crashed while i was editing UVs with probuilder.

Now everytime i open unity, an empty floating window is covering a small part of the editor. Luckily its not preventing me from being able to work, but it is still pretty big and quite annoying. I can't close it, can´t drag it, can´t interact with it at all. Opening the UV editor again just opens a new window instead.

I really don't know how this happened.

 

thankfully, differente projects don't have that bug lingering around

 

Remove probuilder from the package manager. Restart unity. Install probuilder again.