Thanks for your comments, your test program and the investigation you put into it. This bug was already reported as https://launchpad.net/distros/ubuntu/+source/gtk+2.0/+bug/22930
Thanks for your comments, your test program and the investigation you put into it. This bug was already reported as https:/ /launchpad. net/distros/ ubuntu/ +source/ gtk+2.0/ +bug/22930