Alliance quests shown for Horde, and one misplaced quest
I'm only commenting on the quests that I've noticed. Firstly, I've noticed 3 alliance quest givers shown on the map while playing a horde character. Two of them are the ones in Stonetalon Mountains nearby Ziz Fizziks (I've forgotten their names). The other is a quest giver in Astranaar, nearby the placement of the "Elder Riversong" quest giver.
Secondly, I've noticed that the lv63 Outland quest "Wanted: Blacktalon the Savage" is showing up as a quest given by Pixel, a quest giver in Splintertree Post.