Group bug! (Please help)

Now, there is a new dungeon about halloween. I queued for the dungoen. After attacking the boss, he starts to immune every attack . Then we decide just to left the dungeon but not from the dungeon eye where i can click go out from dungeon, from the entrance of the dungeon where the portal is. Then i was back at the place where i queued and now i when i leave from any dungeon i go back there. And its saying that i am in group all the time which is not true. (there is not even a group). I tried unstuck, relog and the other possible things but nothing worked. Then i got the idea to go again to the dungeon. The dungeon is located in Tirisfal Glades, Eastern Kingdoms. I went in agian and then immediately left it. And i was again at the place where i queued it for the first time.
If anyone knows how to fix this problem or bug it will be cool :)

type this on chat:
/script LeaveParty()

Bro tnx. I love you <3. You just save the day.

Thank you SO much for the fix!! Saved myself and a new friend today