There is a small bug on kino.to with the download image (select a movie and click on the big black image). Middle click for new tab works, left click does nothing. I cannot tell you, what the problem is. The rest works really fine.
But after a few weeks it just stopped working. I updated from version 0.4 to 0.5 but it still doesn't work. I'm guessing that a Firefox update killed it but I have no definite information to that effect.