Apple TV intermittently not showing purchased movies.

When I go to Movies > Purchased > All

My Apple TV (3rd Gen) will often show a different number. It varies. Sometimes it’s all the movies (currently 330), sometimes 2 less and sometimes 5 less. I can never tell which movies are missing as we have so many but we did encounter an instance when we were trying to watch Star Wars and it was asking for the movie to be purchased when we knew we already had it.

Sometimes, restarting helps. Other times it doesn’t. This is very very very frustrating and I am sure we have ended up double paying for films we had previously thought we owned.