Zo byšće tute přidatki wužiwał, dyrbiće Firefox sćahnyć.

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Pohódnoćenja za Custom Tab Title and Favicon

Custom Tab Title and Favicon wot Guy de Pourtalès

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je so 4 vite më parë napisał
Sorry to read that. This is strange. It should keep the settings after restart, upgrade and even synchronize them if you have a Firefox account. What version of Firefox do you use and on what OS ?