Can someone explain to me why there are 5 different User Interfaces for filtering in Jira and why this has not been resolved as part of the new navigation. You get different filtering UIs for work items depending on whether you're in:
- Board / Backlog (with a variation in Timeline)

- List view

- Calendar view (variation on Issue search view)

- Issue search (Basic and JQL)


It is by far the most maddening thing every. Not only are the filtering UIs different, the capabilities are different.
- You can't filter by "Not Equal To" or "Not In" except in issue search
- You can't filter on all fields in some views (Board, Backlog, List)
- You can only create quick filters for Board, Backlog
This has to be a super high priority to resolve, with a single consistent filtering interface that is a superset of the functionality of all of them