@jane-n
Thank you!
In my hurry, I forgot to check everything, which I usually do. 😄 I also found that the bottom panel hides itself, when scrolling and a full page appears. I still don't like that panel that thick! If it is really needed, it would be nice, if it become quite thin as in the desktop. I like swiping.
By the way, I have the desktop Vivaldi on ARM on that tablet too.