the 1-5 star voting doesnt work with Chrome and Opera (on Windows 10 64bit). I have latest version of those browsers. The voting works with Firefox.

With Chrome you cant activate any stars.
With Opera you can give 1 star by pointing the 4th star, or give 2 stars by pointing the 5th star

Hm I cannot seem to reproduce this.
Take note that you cannot rate your own files or when you're not logged in. But as you make the comparison between browsers and mention weirdness with opera, I guess that's not the case?

I was logged in, and tried to rate another users files. But didnt manage with chrome or opera. Finally with Firefox managed. I logged in with each browser.

Here demonstration with Opera browser

I'm with Chrome and it works normal here. (Windows 8.1)

Sounds that I need to investigate what is wrong with my browsers