From time to time I see a very annoying behaviour: I work with a document on my Mac, change something ans save from time to time (Cmd+S). And during the editing the page blinks and reloads with an old version of the content, as if I reverted it somehow.
Or even more: I get both version at the same time - old one and the current, so the edited lines are doubled.
Sometimes I get the version, where I deleted the line (to paste it to another place in the document), but at the step where the line is deleted and not yet pasted. I just loose the part of the content. Undo doesn't work after such "reloads".
It's so extremely annoying. I'm tired to rewrite the changes multiple times and search what version was loaded this time after "revert", to find out what I've changed in the last minutes.
P.S. I sync and backup the notes in iCloud (30 mins) and the Internet connection is just fine. This happens not always, but stable during many months. Sometimes I work normally many weeks.