When you cast a buff spell on someone ppl that wasnt in same screen cant see the effect and sometimes even charged skills cant be seing from someone that wasnt in same screen when charged like if i have multishot charged and for someone else it displays as if im shooting a normal arrow..
Other bug in effects is when some animation just get bugged and keep showing even when the effect went off.. when this happens it normally has a brighter color as if it was more then one animation running at same time