I'm the owner of a JWM Business-Managed Project with around 200 active epics. They are visible in the summary and the list view, but the board view only shows 130 of them.
I know that done issues get moved from the board after some time, but these nonvisible issues are all in to-do or in progress. Even if I create a new epic on the board, it disappears after a bit. There aren't any active filters on the board.
I don't see other configuration options for the board view, neither in the project settings nor in the jira overall settings (projects, issues, ...) and I'm an overall administrator. There are only the spare options on the board itself (customize showing workflow, fields in cards, period to archive).
Am I missing something? Or does it seem to be a bug to you all? I'd be happy to hear your opinion.