Server Version#: 1.22.1.4200
Player Version#: Plex Web 4.51.3 (My Server IP) / Plex Web 4.53 (app.plex.tv)
In Live TV & DVR while viewing “All Channels” on the guide I can see all of the programing. As soon as I switch to “HD Channels Only” more than half of the programing says “Unknown Airing”
This also appears to affect my ability to record in HD (though this may be a separate issue.) Even restricting a recording to a known HD channel yields a 480i recording. I have deleted and readded the DVR.