Scrolling down/upwords in EPUB documents is broken

[maxigaz]

When I open an EPUB file (such as Byte of Python) in apvlv v0.2.0 under Manjaro Linux, pressing the down/up arrow keys or j and k in normal mode results in jumping to the next/previous chapter. (In PDF documents, pressing these keys scrolls just a few lines as expected.)

If visual mode is enabled by running :set visualmode yes, pressing k moves to the previous chapter and j doesn’t seem to do anything.

I’m using the example rc file shipped with the package installed from the AUR.