This has stopped now. The problems persisted for 2 days, no matter which Jumble fork or device I was using. I kept rebuilding my 10012 list in various versions. At some point today, one finally stuck and the new version is now available in Jumble and Fevela. I haven't tried to publish anything yet, but given timing of the multiple strange behaviors, I am assuming they were connected. If this arises again or if I am wrong in my assumption, I will let you know. Thank you.