Flame Totem KnockBack bug

Hey Path of Exile team, I know knock back has been an issue in this game, and would like to extend your knowledge, if you did not know already about the flame totem equipped with knockback support gem can be really buggy. Here a short clip demonstrating my flame totem knockback skill. Have a good one.

-Praxis

http://www.youtube.com/watch?v=ukGGRUUjaJg&feature=youtu.be