Why is there a difference between the Issues nb displayed in the board & in the board configuration ?
Here's the number of issues for each column in the Configuration board:

Here's the number of issues when going back to the board

Columns:
- Internal Use: 17 or 15 issues
- External Use: 33 or 31 issues
- Verification Request: 17 or 16 issues
This problem is also observed for others projects.