Xporter is not working properly on Kanban boards

Description
The Xporter window is not being displayed when trying to generate a report from a Kanban board.
There are some workarounds that can be used to "fix" temporarily this issue:

1. Maximize and minimize the Kanban Board
2. Expand and collapse the left Jira bar (Project Settings)

After doing these changes the Xporter works properly on the Kanban board

How to reproduce and actual results

Expected result
The Xporter window should be always displayed

Version

• Firefox v99.0
• Xporter: 6.9.6 / 6.9.8
• Jira: 8.22.1