Photoshop :: How To Prevent All Windows From Coming To Front

I typically have multiple Photoshop documents open at once along with other programs. Let's say that I want to make a client's revisions. With CS5, I could have my email open and the Photoshop window I'm editing side-by-side. With CS6 and CC, when I click on the window I want to edit, ALL the photoshop windows come to the front, obscuring the email message.
 
Is there a way to prevent this from happening and only bring the one window I clicked on to the front? There is still an option under Window > Arrange > Bring All to Front, which wouldn't be necessary if the windows are always in front.