Im doing this on a controller and i always have my tank as target from the beggining to the end of the dungeon, but there are sometimes when it will just heal myself instead of the target even twice in a row and then it will cure my target, it has only happened to me on controller so far and i double checked that i was not using a macro just to be sure but it still happened :/ i´ll try to record it next time so i can watch it in detail