No dire disasters so far, and I'm able to save edits. Did you have this problem before 3.6.3, which only came out on 2020-03-29? I now think it may be the non-sandboxed version of 3.6.3 that's the trouble.
oh, and btw, welcome!
Please see the FAQ: What's a reproducible example (`reprex`) and how do I do one? Using a reprex, complete with representative data will attract quicker and more answers. This one, of course, doesn't require one.