Audiobooks fast forward/backward not possible

When playing an audiobook on a roku / apple tv, fast forward/backward is not possible for some reason. By pressing the backwards button on the remote, I can only get back 10 seconds or so. I then have to press the button again and again, always jumping back 10 seconds.

It should work like in movies / tv shows, where u press and hold the back button and it scrolls backwards until you release the button.

Hope to see that in one of the upcoming updates.

Cheers,