In case the details are helpful, I’ve also been having this issue. Today it was working for a while, and then it stopped processing new edits. If I reload the page, it will show what the actual last-saved version is, usually the first few words/characters of what I just added. In the past, that would often fix things, but today it isn’t (not a huge deal, because I’m not on a deadline, but it’s good to know this bug is a Thing and not just me losing my mind)