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Navigation buttons and many such icons show up like a add-on bar during start-up

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The icons show up for just a few seconds at the bottom of the browser window. Here is the screenshot http://postimg.org/image/fx7buzsxj/

The icons show up for just a few seconds at the bottom of the browser window. Here is the screenshot http://postimg.org/image/fx7buzsxj/

由 andy. 於 修改

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Try start Firefox in Safe Mode, maybe the problem be an addon:

Maybe there is a corrupt file in your profile try create a new profile:

Also try disable the hardware acceleration: