If you ask me, it wont be fully fixed until we receive a proper update for it. I started having issues after the 21020 Sync update was installed, before that, never had this issue.
Since then, ive received 2 small updates, possibly map updates? IDK but im still on map version NA 220, so not sure what those updates were for. However, ive only seen the infamous blue screen reverse issue once the past month or so. Before, it was pretty constant, the Expo is my DD. Also, read that if you barely tap on the brake pedal and reverse, the blue screen appears. Whatever the case is, im leaning to a software update to fix this issue.