Whenever i start the sprint on the FE team's board, the BE board's items all move from the active sprint to the backlog and when i go the BE active sprint board, i can only see some the FE team's tickets/tasks there, while the rest of them, as i said, are all in their backlog.
This also works vice versa - when the BE starts their sprint, all of the FE teams items get removed from the active sprint board and go to the backlog.
What's going on and how do i fix it?