Your normally get the up-arrow/fast slider when you are hovering the upper half of the slider.
Caveat: what count is the position of the "point" for the cursor, which is the tip of the arrow for the up arrow, and between the arrows for the fine slider indicator.
Caveat: what count is the position of the "point" for the cursor, which is the tip of the arrow for the up arrow, and between the arrows for the fine slider indicator.