Never had any issues at all with Behemoth or Odin after the fixes, also AoE heals do go off even if you can't see or target a party member, as long as they're within range anyway. So yes, they could have properly fixed it like Odin and Behemoth but didn't do so, they could just lower the display priority of Egis and mounts, companions included, since they also count towards the limit and I always see more of them than actual players during zerg rushes. Display priority should always be Monster engaged > Party Members > everything else but you know, this game has lots of weird decisions that keep getting over justified by fans.