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Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

When my firefox is expanded to the maximum window size, white bar appears across the top, how do i fix this?

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A white bar about 1" thick will appear horizontally across the top of my screen when i expand Firefox to the window.

When i click around in the white box it's as if I'm clicking on my desktop.

I have tried safe mode and this is not a problem on anything other than Firefox.

I'm also running dual screens and when I move Firefox to the top screen and maximize, it has no problems. 

Picture provided.

A white bar about 1" thick will appear horizontally across the top of my screen when i expand Firefox to the window. When i click around in the white box it's as if I'm clicking on my desktop. I have tried safe mode and this is not a problem on anything other than Firefox. I'm also running dual screens and when I move Firefox to the top screen and maximize, it has no problems. Picture provided.

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pic didn't upload with the question...