Roku 2XS via ethernet to Airport Extreme, OS and Plex app current w latest applicable updates
PMS v 22.214.171.1241 running on an old 2006 Macbook Core 2 Duo, OSX 10.8, via ethernet to Airport Extreme
Despite my old hardware I've never had this issue till recently. It doesn't occur with every video playback or consistently with certain videos/formats.
During video playback the Plex Roku app will quit, returning me to the Roku home screen. When I go back into the Plex app to restart the video it usually happens again after a few minutes. I've found that if I reboot the Roku it's less likely to happen again that soon. I'd say this happens with 2 out of 3 videos over the past 3 weeks or so.
I've attached my PMS log for what I think was the latest incident and the XML for the file I was playing. Since the Plex app itself crashes when this happens, I haven't been able to capture a Roku log.
I should mention that I also watch the same media from the same server via the Plex web app on a 2015 Macbook Pro with no issues.