Sub-tasks show up just fine on our board view with no additional filters applied. However, as soon as we click any of our quick filters, sub-tasks are removed from the board.
For the record, none of the filters are removing the Stories with sub-tasks, so the parent is still visible.
The most basic of my quick filters that is doing this is literally just:
"Epic Link" != TAM-466
Of course, all I'm trying to do with that is exclude any tickets that are part of that epic (of which there are no sub-tasks), so why is it ALSO removing all sub-tasks visible on the board?