Thank you for taking your time to report this bug and help make Ubuntu better. Can you please specify the release version of Ubuntu you are using and the full version of Firefox installed when reporting a bug.
What do you actually mean as a bug in your report, the Log in window being covered by the book? You mean to say that you're not able to use the Log in or Sign Up to.. window? What happens when you click on the window, does it come forward? Can you close the window by clicking the X on the top right corner of the window?
Thank you for taking your time to report this bug and help make Ubuntu better. Can you please specify the release version of Ubuntu you are using and the full version of Firefox installed when reporting a bug.
What do you actually mean as a bug in your report, the Log in window being covered by the book? You mean to say that you're not able to use the Log in or Sign Up to.. window? What happens when you click on the window, does it come forward? Can you close the window by clicking the X on the top right corner of the window?