I had this problem as well and managed to fix it by uninstalling the 'unclutter' package. This program hides your mouse pointer after a couple seconds of it not moving, which apparently also triggered the Firefox tooltip to disappear. I uninstalled this package, logged out and back in, and now my Firefox tooltips work again.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/782049 Title: firefox tooltip timeout after ~2sec To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/782049/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
