[itsme]

Cross-checking with "Seul ce soir", where the PDF is in portrait format. With the tablet in portrait orientation everything is fine.
With the tablet in landscape orientation "Fit Width" is as expected: the width determines what is displayed, to see everything I can scroll vertically.
"Fit Screen" shows the same as "Fit Width" and requires vertical scrolling to go to top or bottom, "Fit Height" additionally cuts off from the left and right side.
The expected behaviour is that "Fit Screen" and "Fit Height" show the full height of the PDF with black bars at the sides, just as landscape PDFs are handled on the tablet in portrait orientation.