"Last Message" link works incorrectly

Open http://deploy.jtalks.org/jcommune/
Click on the "Last message" link for any theme, having more then one page.

Expected Result: Browser opens last page and scrolls to the last message.

Actual Result: Browser opens first page and first message.
But it works correctly, if u will click "Last Message" link from http://deploy.jtalks.org/jcommune/branches/2

Founded by testing JC-228 userstory.