Infuse will skip 10s forward/back when tapping the edges of the Siri remote. You can change this to jump between chapters by enabling the 'Chapter Controls' option in Settings.
I'm not using the Siri remote (I'm too old go go away from remotes with buttons), I use my TV remote which have a |<< and >>| which does not work with InFuse, but with iMovie, Plex, etc., which is why I believe that there could be an issue with InFuse.