Thank you for the feedback. I’d love to replace the graphics with your own, if you want.
If you look at the first GIF on this page (representing the second window), you’ll notice at certain cursor positions, the hand is hidden behind the tablet.
Could you try moving your cursor along the edge of your desktop while observing the second window, to see if the hand becomes visible?
I’ve done a rewrite of the app to make it easier for me to edit and add features, like a hand-resize slider.