scrolling in generell over an automation is working, however due to security reason the page scroll but the address bar will stay. Same for fullscreen solutions over browser mod or lovelace wallpanel, only physical interaction (touch) will hide the adressbar or enable full screen.
Unfortunately I have the same annoying issue as my silk browser freeze (not working on any touch) around every 24-36h. Doesnt matter if I use stay open silk link integration, loevelace wallpanel slide show or a loop of an youtube video.
The Show 15 has potential but it is crap since sideloading is impossible… so I kept my normal Android tablet.