Check In on Series & Seasons?
In some of my watched Anime series there is a Check In Button on the Main Page & Season Page, this must be a bug. It doesn't show how many episodes I watched anymore, only 1Play.
It only affected on Anime Series
This is now fixed.
https://trakt.tv/shows/the-chase-2009 is another non-anime exhibiting the same
Can confirm this is happening on non Anime. Having the same issue with https://trakt.tv/shows/the-cinema-snob amongst others.