Originally Posted by
hulkgor
"On my warlock i sometimes cant summon newcomers in the raid when we enter desolate host fight"
That's intended.
You can't interact with people on the opposite realm. Ie. If dude who popped Feast is on spirit realm, people outside it can't eat. If you try and summon people on the outside realm, warlock who popped summon stone needs to also be 'outside', etc.
Spirit realm CAN'T interact with stuff on the outside realm, and vice versa. It's their gimmick to avoid aoe heals and cooldowns having an effect on both sides.