Infernal Legion disables passive skills like Mass Rejuvenation on minions.

Infernal legion passive gems, when applied to any minion skill it disables any aura applied to them like the case of mass rejuvenation.

Mass rejuvenation passive:

"

Regenerate 0.5% of maximum Life per second
Allies in your Presence Regenerate 1% of your Maximum Life per second

The infernal legion doesn't say anything about disabling the effects from this passive or any other regeneration passive:

"

Minions from Supported Skills take 20% of their maximum Life as Fire Damage per second
Minions from Supported Skills Ignite Enemies within a radius of 1.5 meters as though dealing Base Fire Damage equal to 20% of Minion's Maximum Life

While when you go to the gem stats you can clearly see when the gem is applied the regeneration values are removed.
If this is intended it should indicate so in the description, it is very frustrating discover things like this mid-game.

+1 for this, i thought my minion might be able to sustain the infernal legion but it seems to remove all HP regen...

Would have been an interesting interaction.

Agree. this is definitely a bug