Button not hidden

I was expecting for my app's buttons to be hidden when I use it on app just like how it appeared when using companion app. However, it is soo visible that it got me annoyed. Is there no other way to make it hidden but still functionable? I set its background color as "none" because it is just layering upon the supposed button's image on the background screen.

Set an empty (100% transparent) image (empty.png) as the Button.Image.

grafik