Not a huge issue, just an observation:

When in fullscreen-mode and using zoom, the whole publication including the controls "jumps" to the top of the screen. I guess this is intentional and works quite well with publications in an upright format. However I have a book in landscape format, where this behaviour is a bit annoying, since you even have to drag the book down in order to view it properly.

You can watch this behaviour on this website: www.golffor2.com/#the_book

Is there some setting I should be aware of to change this behaviour?
If not: Perhaps you can consider an improvement in future updates?

(I guess an option in the backend to choose whether it should align on top or be centered would be nice or alternatively an "offset" for vertical alignment in Pixels or Percent – if that is at all possible.)

Hello,

Unfortunately currently it is not possible to change this behavior. We add it to our TODO list.

Regards,
ARI Soft