Plex on Apple TV 4K(2nd Gen) not marking episode as watched when watched on Netflix

[Papalpenguin]

• tvOS software version: 17.2(21K365)
• Plex app version: 8.29(7486)
• Brief description of the issue or bug:
  Play an episode of Supernatural on Netflix completely and then go back to Plex and episode is not marked as watched.
• Steps to reproduce (these will make it easier for development to track down)

Play an episode of Supernatural on Netflix completely and then go back to Plex and episode is not marked as watched.

• When the issue has to do with information from your Plex Media Server (such as streaming content, accessing item details, creating playlists, etc.), you should gather the “Plex Media Server.log ” file covering the issue being reproduced and - attach that to your post.
  com.plexapp.plex.PlexShelfExtension 2024-01-07–22-53-18-472.log (57.0 KB)
  com.plexapp.plex 2024-01-08–02-36-43-439.log (521.9 KB)

[FordGuy61]

Plex does not sync watched state with external services such as Netflix, Amazon, etc.

See Universal Watchlist

Frequently Asked Questions

Why did something I played from a Plex Media Server or other streaming service not get removed from the Watchlist?

Currently, the Universal Watchlist and Discover source do not sync the view state of content from a Plex Media Server or external streaming service content. It will only automatically track content from Plex’s own Movies & Shows streaming or when you manually mark something as watched in the Discover source.