Just had a bug where after creating a character I had 4 classes instead of 2. I was playing around in character creator for like 30min before finishing creating my character and when I would preview abilities, previously selected classes would appear in the preview. First I had druid and priest multiclassed, but then changed my mind and decided to do paladin and chanter. However, druid kept appearing as my second multiclass. I went back and forth between these 2 class pairs until i decided on paladin/chanter. when i entered game i had spells and abilities from druid, priest, paladin and chanter on one character.

Same here. Created a priest/paladin/monk by accident.