I've tried the standard google routine but can't find anything on my specific problem so I'm coming here next.

I just bought a xaiomi mi box s and also the rii x8 mini keyboard so I can use a web browser. Everything about the keyboard is great except that the back button on the keyboard (which actually says "back") doesn't do what it's supposed to. It does nothing. This means I have to keep the xaiomi remote handy too which is annoying. Anyone else encounter this issue? no other button on the keyboard seems to perform the same function as far as I can tell.

thanks in advance