Skills activated but is interrupted by enemies

As a warrior melee build, i use Shield charge. Just when I activate Shield charge skill, and enemy attacks and hits me (whether close combat or projectile), the skill gets cancelled and I can't use the skill again because of the 3 seconds cooldown. No I do not dodge roll at the same time I activate the skill. No I am not blocking before enemy attacks, and am not stunned.
This is easily verified with fast attacking enemies like in vaal factory.

Please fix, it's been there for months and hasn't been fixed.