Works fine for me. What is your pedal setting? Mine is 'Activate link point or turn page' and 'start/stop autoscroll'. It also worked with 'activate next link'. This is in landscape, scroll continuously to end, vertical scrolling, fit width. My pedal is the Pageflip Cicada.
Dell Latitude 13.5" 2-in-1 Ubuntu/Win 11
Samsung Note Pro SM-P900 12.2 Android 5.0.2
Samsung S7+, Android 12
Samsung Note Pro SM-P900 12.2 Android 5.0.2
Samsung S7+, Android 12