First of all, Evernote has served me well for years. It's a shame I haven't showed up here earlier just to say thanks for an incredible UI experience, and now only showing up to find a answer that urgently needs to be addressed.
I use EN daily, over the last two weeks it's been guaranteed, not only once a day, but literally everytime I type in new content that I'll get like 4 duplicates to the note where I'm adding content to. Infuriating indeed. I tried closing apps on other devices than my desktop (perhaps, still updating in background?), I tried signing out of app and deleting all data. If the only workaround is "being careful about new data input with sensitivity to the way syncing uploads" or splitting up notes, I won't say that I'll find somewhere else, but the entire team needs to be on deck for a update this week to fix this issue. I hadn't the problem only a update or two ago, so just rollback whatever changes have been made. I'm willing to try out some suggestions. Thanks.