When filtering by Flow State on a child project it works correctly. And when switching to the parent project the filter remains correct.
However, when beginning to filter on the parent, the filter by Flow State does not work. No items are returned.
Release : SAAS
The issue is that each project has its own set of Flow States and each of those flow states has its own unique ID which is what is really being filtered on when the request is made.
So filtering for a flow state of "New" in one project and then switching projects will have seemingly unpredictable results since the "New" flow state in the other project has a different ID.
Due to the nature of the flow state to project relationship, this behavior is to be expected