The back-to-home screen worked perfectly fine in my testing I just tested it again can you restart the app and try it again if it doesn't work let me know. I will look into it.
I know it is a little tough getting the pickups working fine I will update it soon.
The game is quite heavy so it may not work the best in a multi-screen mode. (I am working to optimize it as much as I can ) .
I will also change the invisible borders and keep it a little easier to find the way you will have to go.
Thanks for informing me about the issues.