Previously, we could navigate within the structure very efficiently with arroxs keys. Up will target parent, Down target child, left and right for siblings.
Now, Up and Left-Right have the exact same action, it targets siblings, then when out of siblings to select, switch to parents or childs.
It seems to me the change for left and right selecting parents and child is needed to reflect the new bottom bar. But then why not reafecting up and down only to target siblings?