I asked support about this (they made a feature request) over a year ago. I made another one 4 weeks ago for the same issue. At this point, unfortunately, I'm done. No other sketching app I have on my iPad Pro discards my work if I don't actively save it. Autosave has been part of iOS for years and especially in a note taking app this is ridiculous. If I'm in a meeting, taking notes, and I stop for 5 minutes to discuss something, I don't expect my notes until that point to be deleted.
Obviously Evernote has had a lot of issues lately, both with corporate departures as well as a fair amount of negative press for becoming stagnant. I had really held out hope for Evernote. I've been an iOS user for over 8 years, and most of them have been a paying premium user. Looks like it's time to find another solution and recommend my clients do the same. ?