Tyrant Weapon set bug (Tyrannical Charge) not providing any bonus

dopefish18

I was testing the tyrant weapons set on CW and I noticed that the Tyrannical Charge buff does not seem to be providing any bonus. Looking at the character sheet while in combat as the buff increases their is no change at all to Damage Dealt, Outgoing Healing or Damage Taken stats. I'm not sure if this is a bug with displaying on the character sheet or if the buff isn't actually doing anything at all. It's hard to say as there are so many variables that affect damage that I can't pin point a difference.