Movies are not properly showing "to watch" flag

The flag “to watch” is not properly marked in the movies.
The following is a screenshot of my list of movies “to watch”, all have the light blue flag:

But if I open them one by one, the flag “to watch” is not showing as marked, even if they are in the list (as shown above):

If I try to flag them from the movie page, it say that the flag has been removed, even if I don’t even see it as flagged.

I run latest beta version 3.2.7