divergent unsyncable single-user multi-device private swarm
I've long used a "Reminders" private swarm to send reminders to myself from one device to another.
While #1634 (moved) was preventing message delivery between them, I used it for testing, and tried to send messages from both ends.
IIUC, this shouldn't have been a problem, but the swarm seems to have gone hard out of sync. Even after hours with both devices connected, having got plenty of message syncing between them, this swarm seems to have got stuck.
I even tried to add a third device to the mix, to see if that would somehow help. It didn't. Other swarms synced beautifully, but this one didn't even show up on the newly-added device.
The git repos on both sides seems to be consistent. The /main tag corresponding to the other device on each device point to the commit corresponding to the last post that they managed to sync.
I also tried to create a new swarm, on one of the devices. It wouldn't appear on the other. I also noticed that these two single-user swarms wouldn't appear as choices in the list of users to add to a swarm, even though other swarms, in which other users are present, appear on that list.
Perhaps there is something special going on about single-user swarms, maybe, that's preventing (optimized away?) synchronization across multiple devices associated with the same single user?