Yeah, I’m also seeing navigation issues with Android’s Back button (or gesture). It doesn’t always take me back to my Android home screen.
On a clean launch of TR, if I don’t tap anything, the back button will correctly go back to the Android home screen.
But if I navigate to a sub-screen, the first press of the back button will go back to where I was, but the second press won’t do anything…I’ll still be in TR.
To get out, I have to use the Android Home button (or gesture). TR should let you return to the home screen only using the Back button/gesture.