Why do I get a rectangle hooked my screen that did not previously exist. Highlighted in dark blue and I want it really gone, it takes place of the screen.

After the upgrade to new firefox, I now have a rectangle across my my screen under my search bar. It is featured with a more dark blue on top and various colors about 1/2 down, measuring about 1/2 inch in depth. How can I remove it?

Start Firefox in Safe Mode to check if one of the extensions (Firefox, Tools/menu key > Modules > Extensions) or if hardware acceleration is the cause of the problem.

  • Put yourself in the DEFAULT theme: Firefox, Tools/menu key > Modules > appearance
  • Do NOT click on the reset button on the startup window Mode safe

Tags: Firefox

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