Death Knight stuck in the "Realm of Shadows".

Hello! My character Hidrobomb, is stuck in the "Realm of Shadows" in the Death Knight starting zone. I've finished the quest which teleports me into the "Realm of Shadows", but I happened to be near another player who accepted the quest I've just finished, and I got teleported back with the other player. Now I'm completely stuck in the "Realm of Shadows". I've tried all sorts of things to get myself unstuck, I tried unstucking my character on the website, I tried getting summoned out, and every possible thing that came into my mind, but nothing worked. I wrote a ticket, but the GM who responded to my issue couldn't help me. I would remake my character, but I've already sent heirlooms and gold to my DK, and I don't want to delete them. Besides, this is a bug, which I believe may cause difficulties for other players if not fixed. Please unstuck my character and fix this bug. Thank you!

Try abandoning any quests you have and then right clicking the buff.