I am attaching a log. After some trial and error, I was able to set up my terminal in a state such that I could reproduce the error in a single keystroke.
The transcript of the session is: $ script -f /home/$USER/bin/shell_logs/$(date +"%d-%b-%y_%H-%M-%S")_shell.log Script started, file is /home/bbeltr1/24-Mar-15_13-29-44_shell.log $ tmux attach [vim renders] [I hit <ctrl-q>j, to change to the (non-existent) "next lower" tmux pane] [the character appears in my vim status line] [I hit <ctrl-q>d to detach] $ Ctrl^D I should also point out that if I resize the window before I detach, the character disappears, presumedly because vim re-renders the status line. More in general, any action which re-renders that character on the screen will cause the glitch-character to disappear. Thank you for the quick response! ** Attachment added: "script session when bug appears right away" https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1435905/+attachment/4354707/+files/24-Mar-15_13-29-44_shell.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/1435905 Title: gnome-terminal randomly outputs control characters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1435905/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs