Chaos Mastery Support Gem does not work with Poison

Chaos Mastery Support Gem does not work with Poison although all poison gems have Chaos specified on them.

bump? anyone else?

i notice that the other day when i fully respec in poison and chaos and nothing increases the dmg of poison gas. when i put in physical went up. and funny enough i'v added lighninig dmdg to the skill and poison gas went up same with posion burts that is not how poison works. they said 20 procent from phys and/or chaos. i am gonna try today a chaos base dmg bow. imagine i struggle in the campain with no more than 889 poison dmg on the gas cloud. i have managed to get to act 2 cruel after a lot of overfarming and many deaths. so in conclusion i think is something wrong with scailing poison with the noides of poison and chaos dmg. they dont seem to work.