Just now
"Append completion date" @done circular repeatedly syncing through Reminders
I am not feeling up to running down the repro conditions, and am just disabling "Append completion date" for now, but (in addition to having gotten a bunch of "Reminder changed" dialogs on various devices,) I opened my laptop this morning to find this situation on both of 2 tasks I used @remind for yesterday.
I do have the Import Reminders plugin (recently) installed, but I don't think that's actually relevant ?
I probably checked the task off in quick succession in both noteplan and reminders, possibly on different devices, but I think the same)
Pending
I'm not sure why the #tag content got duplicated, but the problem might be specific to the tag-only content of the task/reminder; I did see a similar issue with the "Water the Plant" one, but it was at least more easily arrested