This thing! It remains open after checking the document and I’d like it to bugger off and give me my workspace back. =)
I’d recommend adding a right-click context menu to the editor so that it’s easy to close, especially if you can’t fit in a little x somewhere in the top right.
Edit: I was able to get rid of it by opening a note and then closing that, since apparently opening something else that occupies that space simply replaces it. Interesting workaround.