New window opens in main monitor when using dual screen

I am using dual screens and my "main screen" is on the left. Ever since Firefox updated to 32.0.1 on Monday I've been having this issue. Before the update, I would have my main Firefox window opened on the left and, when I click on a link to open a new window, it would open on the right screen. Now, it will only open on the left screen, where the other window is. If I drag the original window to the right monitor and open a link, the new window will open on the right monitor. But once I drag the original window back to the left, new links will open in the left again.

Before if I had this problem, I would simply drag the new window to the right monitor, then back to the left and close it. Then click the link again and it would open in the right. Kind of a work around I guess. But since the update, even this will not work. Any suggestions? Or is this a new function of the updated version? Is there a way for me to go back to the previous version? Any help is appreciated!