I don’t understand why the List view’s “Hierarchical” option for a tree-structured DB is only available if the DB appears at the top level of the List view:
Here the hierarchical option is not available for the same DB when it appears at the second level:
Can’t say that it answers the ‘Why?’ though
In my case (probably the most popular case by far), I am modeling a strict tree structure with the one->many self-relation.
This case at least should not be problematic to support, unless adding a third List View level that might refer back to an already-displayed parent.
I offered a possible way of achieving this here:
There was also a discussion further down the same thread on impacts on both 1-many and many-many relations.
I do hope there is a solution to this at some point as it allows for many interesting possibilities.
This is resolved in latest release