Blizzard has released a new Patch 1.1.4 hotfix, increasing experience gain in higher World Tiers and fixing the Seeds of Hatred bug!
Players have been clamoring for a return of the Bonus Experience Weekend, and this seems to be a compromise when combined with the recent increase to the Urn of Aggression. Not only that, but several instances of players being killed with millions of Seeds of Hatred on them have been recorded, and this hotfix seems to address that, removing the problem!