Aby toś te dodanki wužywał, musyśo Firefox ześěgnuś.

Pśizjawiś
Dodankowy symbol

Pógódnośenja za Custom Tab Title and Favicon

Custom Tab Title and Favicon wót Guy de Pourtalès

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Wótegrono wót Guy de Pourtalès

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jo se napisał ੪ ਸਾਲ ਪਿਛਲੇ
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 ?