Originally Posted by
Aeris25
The only thing I can think of is; Unit frames -> "insert desired frame here" eg, Target Frame -> Drop down menu to the right which probably says "health" -> Drop down to buffs or debuffs -> click "enable" and edit away your preferences.
From what I've seen recently though even that can have issues with how many buffs it shows/which it shows but I believe you can get around it by going to "filters" and simply filtering out all the stuff you don't want to see, ie MotW, BoM etc etc.