Reviews on a movie's title page cannot be evaluated

This has happened to me more than once but I don't know if it's a global issue. If I read the review on a movie's title page and see fit to rate it useful or not, I'm not able to. Nothing happens when you select the 'Yes' or 'No' option. I have to look for the same review when I select 'See all user reviews', and on that page the selection can be made.