So last night like most people i picked my new class, i was a DE summoner so i stayed on that same route, new summons are class, and the new skill for extra p.attk is great too....
however, mana sharing? this skill doesnt give mana share to whole party, it gives HP (not MP) to summons, is this correct or a bug?
That's correct. Now you have Servitor Major Heal, Servitor Major Group Heal, and Servitor Balance Life.
Aeore Brilliant Recharge was rebalanced to basically make up for the MP you are no longer giving the group.
Personally don't see this as anything to cry about (not you, some others I've spoken to in game). Your summons never have MP issues cause you can Void on a 3 second cooldown and you gain more surviveability (outside of Olympiad).