I was farming repu with my guild, why cleared all the way to the first boss.
I reconected to load DBM, and when I got back I couldnt see none of them.Then I went out the inn, passed the leader.
And outside of the Icecrown citadel I couldnt see the alliance pvping at the entrance.
They said there were a lot of them but for my it was completely empty, even without corpses.
I found out that I couldnt see the summon stone but if I got far enough players and structures also NPC's started appearing but when I got nearer dissapeared again.
Idk what happened but it happened after I disconnected, I tried disabling all addons but still same bug.

My Horde player is: Mordekaiqt