When I have a generic board filter like:
project = MY_PROJECT ORDER BY SOME_FIELD ASC
On my plan I use the board as the source and I see epics listed with tasks within.
When I update the board filter to restrict by something for example:
project = MY_PROJECT AND parent IN (EPIC_1, EPIC_2) ORDER BY SOME_FIELD ASC
Then the epics don't show and all tasks are listed together under the accordion
`Story - XX issues`
I don't have any filters or grouping set other than Filters > Hierarchy > Epic to Story.
Without changing any grouping or settings on the plan I either see all the epics in the project or none - depending on the source filter.