This problem is also apparent in the next screen of the wizard "Prepare mount points" IF you try something that causes an error message to appear. In this case, the length of the error message will force the window to become wider than the screen (rather than just wrapping the text)
-- Partition list exceeds window boundary https://launchpad.net/bugs/44742 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
