Tell this to balance roots, they can full burst u during roots+solar silence, the problem here is that this roots break insta after 1 point dmg, and this 3s just should not break cuz they are 3s.
You can see what i mean by reading this 2 spells description: http://www.db.pandawow.me?spell=50041/chilblains vs http://www.db.pandawow.me?spell=107566/staggering-shout (Damage caused may interrupt the effect.) Chilblains are 3s cuz they are not suposed to break by dmg.
Another example: http://www.db.pandawow.me?spell=50041/chilblains vs http://www.db.pandawow.me?spell=339/entangling-roots (Damage caused may interrupt the effect.)
DK chilblains are 3s roots, when other roots are 5s or 7s in pvp, thats why they should not break, appart of that, thats what u can understand from the description.