Well here is the scenario:
There are two boards in project lets say X1 and X2. X1 board is based on label X1 and X2 board is based on label X2.
I created a sprint S1 in board X1 and assign some X1 issues. Then as soon as i assign some X2 issues to the S1 sprint, it appears in the backlog of X2 board.
Now i started the sprint and it appears in Active sprints of both board. Let say there are 2 issues in X1 board of sprint S1 and 2 issues of X2 board of sprint S1.
When i click complete the sprint from X1 then it shows all the issues in the sprint i.e, issues from both the boards. I choose to move it to next sprint S2 and click complete.
Now the situation is issues in X1 moved to S2 sprint perfectly but issues in X2 moved to backlog of X2 board.
What could be the reason? Please help us on that.