Button to open Website disappears and stays hidden

[Himmelmeister]

When an article has the wrong length, it can happen that the footer with the button to the website disappears. The article is just long enough that you can scroll and the footer does disappear. But then there is no way to show the footer again.

I made a short video to illustrate the issue: https://sendvid.com/faz97gxu

Version info: OCReader 0.57 from F-Droid, Android 10 / LineageOS 17.1