Looks like the bug happens too with libgtk2.0-0 version 2.18.1-1ubuntu1 (at least the buttons not working until "enter" key pressed, and the install new software screen bug)
-- Buttons in Eclipse not working correctly with GTK+ 2.18.1-1 https://bugs.launchpad.net/bugs/442078 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs