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After upgrading to 9.0.1, I now have space at the top of my screen -- whole page used to be filled, with tabs at top. How to get back to how it was before.

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My screen saver shows for a few inches in back of the on-line application I'm in now, after upgrading to 9.0.1. How do I get its appearance back to how it was before? My tabs are at the top, which they were before. But this 2 inch space at the top is distracting.

My screen saver shows for a few inches in back of the on-line application I'm in now, after upgrading to 9.0.1. How do I get its appearance back to how it was before? My tabs are at the top, which they were before. But this 2 inch space at the top is distracting.

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Check that that space is coming from a toolbar that doesn't display properly.

  • Firefox > Options
  • View > Toolbars

See also:


Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).