I created a view, within my Movies library, with the below filter... Unwatched > Movies > by Release Date. Nice and simple.
I selected the "Add to Playlist" button and named the Smart Playlist accordingly.
I can see this is a Smart Playlist as as the preview image has the cog present. But the playlist still contains movies after we've watched them. Even if I manually change the Watched Status os a movie, the playlist remains static.
Have I missed a step that is preventing the playlist from updating itself?
Edit: On further investigation, this only appears to affects Plex Web - the local clients are updating their playlists just fine.