Divine spirit stacking bug

[[U][G][L][Y]]

I found out that you can actually cast 2 divine spirits to yourself at the same time (rank 6 and 5)

Easy as this
First open your spellbook and find divine spirit rank 6 , cast it
Then cast rank 5 divine spirit , Tadaa
It wont overwrite the rank 6.

SS:

as i have been thinking if this is intended way of the game , but rank 5 and 6 should not definetly stack

[Joevlol]

Been known for quite a long time dude. It also does nothing but act as a debuff fodder.

[Kezah]

If you check your stats you don't actually get any increase from the second buff, also it has been like this for some time now.