I’m still having this same problem as djcastaldo. I upgraded to 2017.10.11.2339 but it didn’t fix the problem for me. I am running the DVR as a Docker on my unraid server and using the android tv app on my nvidia shield.
I can now change the tuner priority and get a web guide for either tuner. The tuner that is on the bottom in the priority settings is the one that shows up in the guide on the web access. I can change the priority and schedule recordings from either guide. If I search for shows I can get results from either tuner regardless of the priority settings.
I am using an android client on the Nvidia Shield. Unlike djcastaldo I don’t get a full guide on my nvidia shield. It’s somewhat random which channels show up on the Shield TV.
However, what’s really odd is that if I open the roku app the “on now” window shows all my favorited channels. The roku app does use the correct tuner for each set of channels. I have only played with it a short time but this is probably the best Live TV app that I’ve ever tried on the Roku. My server is an older core I3 and has no trouble transcoding. I only see a few seconds of buffering when I start a channel.