After some testing, it seems that the DK ability "venomous claw" is currently bugged and does not give the damage multiplier aspect of the morph when more than 1 person applies the dot to the same enemy.
As soon as a second instance of the dot is applied, all version of the dots immediately fall back to base damage, no matter their current duration.
The ability works fine if you are the only person applying the dot, but in groups or trial situations where there is often multiple DKs running this ability, it severely cripples the damage of this class.
Here are some screenshots:

@ZOS_GinaBruno
Orsimer Than You I Am: Orc Warden