I think I’m seeing the same thing; my server is on Windows but the players having the problem are the Android Plex apps on two Sony Bravia TVs. One model is 2015, the other 2018. I thought it was HEVC failing at first, but it seems somewhat random and now x264 is impacted as well.
Plex for Kodi works on both TVs all the time., and Plex Web, other clients etc are working fine. So I suspect its an issue with the Plex app on Bravia TVs specifically. Not sure where to start getting it fixed though.
The issue specifically is that the content loads to a blank black screen, and just stays there with the timeline fixed at 00:00. Scrubbing is not possible. I’ve been able to force transcode with limited success, but that only works the odd time.
