The hack you describe has already been mentionned on the bug and used in the ubiquity installer. Did you read the upstream bug comments?
** Changed in: gtk+2.0 (Ubuntu) Status: Confirmed => Triaged -- Newly-sensitive button ignores clicks until cursor re-enters it https://bugs.launchpad.net/bugs/22930 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs