That "thin red line" you're seeing is, in fact, the top of the button. If you grab the bottom of the window and drag to resize it, you'll see the buttons magically appear. :)
I can see the buttons just fine on mine (so, the default window size appears to be correct with our default them at least). -- Thunderbird New Card panel has no Cancel or OK buttons https://launchpad.net/bugs/67905 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
