On the AG Server there is a comments and advertising section at the bottom of the game - the problem is that this section has become "sticky" and covers the bottom of the game panel. This is an issue when helping with adventures, challenges, or selecting bosses (anything that causes the game panel to extend), since the AG "sticky" then covers the bottom of the game panel. This problem has been around for a while.
The same thing happens on Kongregate, and it mostly has to do with their site getting priority over displaying our game. We're looking to do a few things to help out, but it's sadly not something we have direct control over.