Bug: Conflicting windows

I was working with the Navigator window opened in the center of my screen, working on logic. I mistyped the variable and the type ahead error Pop-up appeared. But it was behind the navigator page. I could not close the navigator or reach the pop-up. I had to kill the application to unlock the system.
I would also suggest that this lookahead error pop-up is very annoying. If I mistype one letter (which happens often) it shows up I have to switch to the mouse to clear. Why not wait until I press the tab button to give me a chance to correct my typing mistake?