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Old 02-02-2017, 06:41 PM   #16
Undertoad
Radical Centrist
 
Join Date: Jan 2001
Location: Cottage of Prussia
Posts: 31,423
That doesn't look like standard Firefox, that looks like an Add-On. If it's an Add-On, it can be Disabled. (Hamburger menu, Add-Ons, Disable anything you don't recognize or with an icon that looks like that)
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