Thanks for opening the issue. I'm not on github at the moment (or, rather, I am but don't want to link my profile there to my one here), but to answer the quest

Thanks for opening the issue. I'm not on github at the moment (or, rather, I am but don't want to link my profile there to my one here), but to answer the question my $TERM is "ansi". I'll keep checking the issue page for any updates in future. Edit: I can confirm that changing $TERM to "xterm-256color" removes the issue.