Deactivating and checking if it makes any difference is just a matter of seconds. Please consider giving it a try.
Other than that, there’s one setting that you can try. On the Ultimate Dashboard settings page, there is a setting called “Remove Font Awesome”. Please try to tick this off and see if it makes any difference.
If there’s another plugin loading a different verison of FA across the entire WordPress admin, we let them take over. Keep in mind, this is only a partial solution and won’t likely work with FontAwesome 4. It might not make a difference at all – it’s more or less just an attempt.