I did some searching, and apparently this was reported back in February (http://forum.square-enix.com/ffxiv/threads/17315-Discerning-Eye-Icon-problem?highlight=discerning+eye), but still has not been fixed. The Pugilist ability Discerning Eye has a Gladiator icon for some reason.

Just thought I would point it out again since half a year has gone by and it's still there.