Hi guys,
here are some things I noticed using sovereign Shout.
Major Bug:
Rune: Dawnbreaker does nothing -> no Weakness is inflicted on enemies.
Worth Mentioning: I am using +2 Ailment stacks and Double Ailment Stacks pasive nodes, wich
might habe an influence.

Minor Bug:
Rune: A Princeps' Lead only shows tooltip if you also use the Raging Berserker Rune.

I hope I was helpfull.
Regards
Pippo