I don't know the solution to that one. Size can be adjusted somewhat, but the window has to be big enough and hold enough words to serve its purpose. Something will always be covered up, but once you move the mouse a bit the window disappears.
If you try moving the mouse around a bit that might help. You can put the mouse just to the right of the title and you'll see all of it. once you move below the level of the title it disappears.
Just curious, what screen resolution are you using?