Nope: the 'normal' scroll options in this screen have been disabled (which was a major code effort in itself, as they are hard-coded in C++) as they serve no serious purpose.
As has been explained several times now, one should use the screen as suggested by the hint text.
And even if you would like that, it is not possible to apply 2 functions (i.e. highlight + scroll) to one button.
The only exception to this is the short-red button, as it is coded to close the screen. But as 'red' is highlighted on opening Button setup, this is not a limitation.
BTW: The 'original' code has little to do with the actual code; just look at all the changes.