There is a bug in terminal.app that manifests itself when you ssh to remote servers, launch something like tmux, disconnect, and try to resize the window[0]. The bad part for me is that this happens every time I leave my desk (the terminal resizes to the laptop screen size, and my usb ethernet dongle gets disconnected).

[0] https://discussions.apple.com/thread/3690502?start=0&tstart=...