I locked a L62 mage quite a while back to be my fang farmer or whatever. I had her locked in at 1337 xp just for fun (with xp gain disabled).

Today I went in on and did a few runs with her. The inspect page showed my xp had went up to 1588. I've never enabled xp gain since I had it locked. Also, haven't played on it in a while... Sooo any way I could have gained that through a bug or something?