Have the same issue. Found by chance a group via Group Finder Tool, joined and no one was leader.
Issue also appears when I invite someone, so I should be leader, which 75% of the time isn't.
Disband and rejoin couldn't resolve this issue for me.
Resolved Crown(Group Leader) issue by teleporting to another location. Reload UI didn't work.
This bug is resurgent, quite a few groups I have been have had a player that was bugged and that player could not be given crown and could not start groups.
Original DC #Bloodthorn2014 CoFounder - Terror Officer - Mega Best Friends Officer - Eminent Gaming
1. When forming a group, after the first person joins, it sometimes fails to assign the crown.
2. Some characters have a bug where they cannot be invited to the group (inviter gets a rejection message; invitee gets a failed to join group message) but they can start one by inviting others. If a character with this bug leaves the group or goes offline for any reason, the crown is not reassigned. They also cannot transfer the crown to anyone else in most cases.