I’m using Drafts on my personal and work Macs, both running latest version of macOS 12 Monterrey. I use iCloud to sync. For about the last two weeks, my drafts keep disappearing. I’ll have several items along the left side that I create throughout the day, and then at some point when I switch back to the app they will have disappeared. Then when I go to the other computer and open Drafts, the items will be there but after the app syncs they disappear.
Luckily I’ve mostly been using Drafts as scratch and haven’t lost anything vital. When I did lose something I needed I was able to recover it from the backups.