ZeroTier not disconnecting!

I use ZT to connect from my ubuntu 22.04 desktop to a windows 10 desktop in hte next town over.
On my zt page neither’s box has been checked since yesterday, and the windows box has been restarted a few times since, but I can still connect using the zt ip addr of the windows machine with Remmina. I can continue to connect like this until restarting my Ubuntu desktop.

This can’t be good.
What, if anything, can I do to fix this behavior?

It seems that whatever was happening was solved by rebooting Ubuntu desktop.
After this, I could no longer connect to the windows host. Perhaps Ubuntu is being too “nice” in keeping connections up?

I’m going to have to start rebooting my desktop after closing an rdp session iwth any host, I guess.