UNKNOWN focusable has_input_focus
++UNKNOWN hidden
++++UNKNOWN
++++++UNKNOWN label='Scrollable iframe'
++++++++UNKNOWN focusable
++++++++++UNKNOWN hidden
++++++++++++UNKNOWN hidden
++++++++++++++UNKNOWN
++++++++++++++++STATIC_TEXT label='visible text'
++++++++++++++++++UNKNOWN label='visible text'
++++++++++++++UNKNOWN hidden
++++++++++++++UNKNOWN
++++++++++++++++STATIC_TEXT label='hidden from viewport'
++++++++++++++++++UNKNOWN label='hidden from viewport'