When making Qt Creator full-screen on OS X 10.8 when it is maximized on secondary screen the title bar doesn't disappear and became non-functional

Reproducibility: always
Steps to reproduce:

• move Qt Creator to secondary screen
• maximize Qt Creator (press zoom button on title bar)
• enter full-screen mode

Expected result:
Qt Creator full-screen mode works the same way it works on main screen (title bar disappears after going full-screen)

Actual result:
Title bar doesn't disappear and doesn't react on any clicks on its buttons