tbh, I've always had this problem with pb, though I still use it.
It comes and goes. Sometimes, its stretched versions of my buff icons over my target and tot frames are (even though at the time I don't have a target selected). Sometimes I'm not able to see health/cast bars because pb is showing a debuff on top of the frame. Other times its multiple copies of buffs and debuffs showing up under a hostile target's frame or showing my buffs on enemies.