Previous/Next Buttons not working

[roms]

When I'm playing a TV Shows, the previous and next buttons don't work. On the client I see this request getting a 404 error in the network log:

Code:

wss://my.host/jellyfin-media/socket?api_key=eb4ebd3774f94bf09d05b03d26c59ece&deviceId=TW96aWxsYS81LjAgKFdpbmRvd3MgTlQgMTAuMDsgV2luNjQ7IHg2NDsgcnY6MTIxLjApIEdlY2tvLzIwMTAwMTAxIEZpcmVmb3gvMTIxLjB8MTcwNTYxOTA4MzUwMQ11

my reverse proxy is configured in apache:

Code:

 <Location /jellyfin-media/socket>
    ProxyPreserveHost On
    ProxyPass "ws://127.0.0.1:8096/jellyfin-media/socket"
    ProxyPassReverse "ws://127.0.0.1:8096/jellyfin-media/socket"
 </Location>
 <Location /jellyfin-media>
    ProxyPass "http://127.0.0.1:8096/jellyfin-media"
    ProxyPassReverse "http://127.0.0.1:8096/jellyfin-media"
 </Location>

Any ideas on how I can get the buttons to work?
Thanks!

client - Firefox + JellyFin web player (noticing same problem with jellyfin-media-player v 1.9.1 client too)
server - 10.8.13 / Linux
apache - 2.4.58