I recently was in my email, looking at an email, hit reply, the new reply window opened in a non-full screen small version, like it always does. I then began typing and either hit Shift or Tab, and by accident another key was pressed at the same time. This resulted in another window popping up, which I closed out. Since then, when I reply to an email, the reply message now comes up full screen, no longer longer the smaller, half screen size. I want to restore it back the way it was, I even attempted to use Restore but this failed.