It is caused by a font that is missing. Which languages do you have installed?
** Changed in: language-pack-en (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/635498 Title: Unreadable "unicode" in the Ubuntu Help tooltip (screenshot attached) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/language-pack-en/+bug/635498/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs