The counter change on your TV Shows might be related to today’s update for watched\unwatched account setting options: Watched Checkmark VS Unwatched Orange Corner - #166 by PlexInfo
The default setting is to show the counter on TV Shows though so odd that it disappeared; maybe some caching throwing it off after those changes - my Roku had mixed results for that setting when I changed it until I restarted it so maybe restarting your client might help or maybe there’s a bug.
There’s a lot of mixed opinions on the watched\unwatched function so that thread might be a good one to track.