My wishlist for weird error messages that should go away!
“Connection to nodename closed: unexpected EOF” -> send close message and clarify message to show “nodename unexpectedly disconnected” Issue: https://github.com/calmh/syncthing/issues/122
“Connected to myself, this should not happen” or “Already connected to …” - if it doesn’t cause a problem, change log level of message to not show it in the web gui.