Puncture>Mutilate Bug!

*What went wrong?
mutilate inside the puncture skill is bugged, i apply bleeding to mobs and when i use puncture with mutilate the bleeds are not consumed going against what mutilate proposes. i would like you to check it out because i have already tested countless times on mobs with a lot of hp reaching 80/90 stacks of bleeding and when i use puncture/mutilate nothing happens and the damage remains the same !
i will not take a picture or anything, you can test it yourself !