I merged 10 new notes and only the first one is kept while the rest disappear. I did this twice and same problem. I'm using the latest version 10.14.7 on a new MacBook Pro M1.
What makes this more infuriating is I'm seeing this has been a constant problem and obviously the new versions are not correcting this. Meanwhile I keep seeing new features added that I have no need for, or worse, get in the way of what I'm trying to do. This seems like a problem that should be priority 1 for Evernote to fix. I shouldn't have to downgrade or run two installations to make sure I haven't lost information. If keeping the notes I make aren't the core function of this software, I'm not sure what is.
This should be fixed immediately — and a warning should go out to users about it. Yes, I was able to find the lost notes in the trash, but that's because I had double check the notes were missing in the first place, and then go looking for them. Neither should have been necessary.
This software is useless if I have to worry about notes going missing at all.