I am trying to use the Source bar sort to sort the sub-items in a grid.  It seems to be doing some unwanted filtering as well.

Grid source: Items from [Workstream], a Y/N field

Grid sub-items: two levels of sub-items created inside the grid, without the property [Workstream]

Source bar sort: "| [Status]", Sort ON, Sort Items and Sub-Items

Expected behaviour: sub-items are sorted by [Status]

Observed behaviour: all sub-items are gone

Note that I do not want to sort the TLIs by [Status], hence the pipe in the sort expression.

Is this a bug or am I doing something wrong?

Thank you.