iTunes is Marking TV shows as Watched

Hi everyone,

I'm using the current version of iTunes (12.3) and iTunes is randomly marking some of my downloaded TV shows as watched. This happenned in previous versions as well.

Naturally this is bloody annoying as I have to go through my whole library and reset the unwatched shows.

It's been doing this off and on for months and I wonder if anyone else is having the problem or knows how to fix it.

Cheers

HT100