I received the 12.5 update on 10/19. I have a 3930X - Roku Express now running 12.5.0 build 4175-AE
ALL of my Apps have disappeared! The only app I've been able to add is the Roku Photo Streams app. To get to any of my saved apps, I have to go to search and call them up with voice search. Even then, there is no way that I have found to add them to my Home screen.
My saved Apps do briefly flash on the screen when the Roku starts up, but then are no more.
I have tried restarting, but to no avail. I'm not ready to factory reset just yet.
Finally, my saved Apps do show on my iPad Roku app.
If Roku support is reading these - HELP!