The Abominable Yeti

Same issue here. I haven't started the zone, but the yeti is marked off.

same issue here. arrived here and it was crossed out already when i arrived.
didnt receive my skillpoints either from killing it :(

I killed the Yeti, the quest item didn't drop. Now the quest is still marked as active but I can't finish it. Very frustrating :(

Haven't even entered The Glade interlude town yet, but while working on The Khari Bazaar areas I noticed that The Abominable Yeti is now shown and marked complete.

Yes I had the same issue. The UI on the map makes it look like I had killed the Yeti boss, but I had never even entered the map. The best clue I had was that the waypoint was not highlighted and you can't miss the waypoint as its located right when you enter the map.