Got a new Scishion V88 Plus TV box running Android 8. I connected a usb mouse to it. The left click of the mouse will select the item and the right click will just return. Normally, if I want to select a movie to play, I just left click the movie I want on a list of movies displayed and the movie will play. But on this new box, sometimes, when I click on a movie , the movie seems to disappeared from the list. When I look at it more carefully. It is just scrolled off the screen. So I cannot play the movie.I have no problem playing the movie with same usb mouse connected to my older box (Android 6) using the same application. Since this is a new box and new Android version, I am not sure what is the problem. I am not using any software or driver for mouse control because I just plug it in and it works perfect with my old V6 Android box.