Fixes a bug that causes the main window to not size properly when the
TitleBar is enabled (i.e.: when the TitleBar and MenuStrip are separate
entities). Corrects the size for main window startup and when a user
clicks a "View > Window Size > *Resolution Here*" MenuStripItem
Prior to this fix if a user selects 720p/1080p and "Show Title Bar" is
enabled, the window would be sized smaller than intended and display
black bars on the sides of the render area
9b90e81817