Once clicks and key presses have been sent, Jubula waits for confirmation from the AUT that they have arrived (manual testers use their eyes, Jubula uses confirmers).
If the AUT or the components in it need to be scrolled to access the area being tested, scrolling happens automatically. In the same way, if a tree is collapsed, you do not need to specify an expand action before selecting a node. The expansion is done as part of the selection.