Correct behaviour:
My mouse cursor is hovering over the red reset button to reset back to the preset. Then the options that are changed from the preset are highlighted.Example: the "Temperatures: Cold Climates" slider arrow is glowing yellow. This is expected behaviour.
The bugs:
But checkboxes that are altered from the preset are not highlighted. Cliffs are on in Default, here it is off and not highlighted.
Also, sliders that are deactivated are not highlighted even if they have been changed. Here the cliff frequency and cliff continuity are shown to look just as they would be if I weren't hovering over the reset button, but they are altered from the Default center position and will be moved if I click it.