I am facing a bug right now that does not allow me to complete the main quests of my other characters besides my main character.It is showing the quest of my main character in my other characters.In my whole family of adventurers the quest of my main character is showing in every family memeber

There was an update regarding the main quest last March 22 that it can be completed once per family now, you can check it here https://www.world.blackdesertm.com/Ocean/News/Detail?boardNo=1698