Hello Witold, Apparently it's a problem of python-vte library:
https://bugs.launchpad.net/ubuntu/+source/vte/+bug/778872 Also it happens in gnome-terminal in Fedora Distro: https://bugzilla.redhat.com/show_bug.cgi?id=647942 Please, could you reassign the bug report to the proper package. Thank you so much. Kind regards, -- Julián Moreno Patiño Debian Developer .''`. Debian GNU/{Linux,KfreeBSD} : :' : Free Operating Systems `. `' http://debian.org/ `- GPG Fingerprint: C2C8 904E 314C D8FA 041D 9B00 D5FD FC15 6168 BF60 Registered GNU Linux User ID 488513
