Trashed items come back into inbox

A few times a week a bunch of drafts that I had previously trashed reappear in my inbox. I think It’s always drafts that are fairly recent; say, 10 days or newer. They will typically have inaccurate modified dates. It’s mostly drafts that I wrote once and never modified, but they’ll all say they were modified today. Any ideas?

  1. How many devices do you use Drafts on?
  2. If more than one, is there any pattern of use that matches the creation or resurrection of these trashed drafts?
  3. When did you last restart each device?

This is a known issue in release version 21.1. It is fixed in the current beta cycle (v21.5.15 or greater) and the fix will be included in the new App Store release.