Yeah you cannot do that old SDKA behavior anymore in scene graph. That had the button left or button right. You could make your buttons align to either side. Now you can just build a label list and align however you want. Or even the check list or radio button list. You can then justify the button however you want.
Plus.. those old SDKA buttons with the useless box on the right was just it's poor implementation of a bullet list with the bullets and text right justified. That is ugly isn't it? That isn't modern. That isn't forward looking. It arcs to by-gone era of yesterday. I think Roku wants users to abandon those old ugly templates. Not try to "reimagine" them in scene graph and remember them with nostalgia. Not much nostalgia left for those old screens. They look dated and deserved to be retired.
RIP SDKA. Long Live RSGA.