Here i just got it again:
2018-04-11 20:57:15: Request from DEVICE for file FILE in unshared folder "FOLDER"
This folder has been paused for more than a day now. Syncthing was stopped for many hours and was just restarted 1h 24m ago.
The folder was not paused nor unpaused since then.
p.s. this looks like the same issue: