Hello,
As discussed elsewhere, JSM projects cannot have Kanban/Scrum boards attached.
So I used the ugly hack explained here (create a board via the boards UI, use a filter that queries the JSM project and then place the board elsewhere).
It's all well & good, but the Done column (collecting all issues with Closed status) has a very large number of tickets. I set the board limit to max of 10 issues, but the limit is ignored - I get more than 10 in each swimlane.
See attached screenshots.

Any way to fix that, or is it a known issue?
There is a feature request here, but I'm not sure it's relevant.