To use these add-ons, you'll need to download Firefox.

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Iceggiren i Custom Tab Title and Favicon

Custom Tab Title and Favicon sγur Guy de Pourtalès

3,6 n yitran ɣef 5
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Tiririt sɣur Guy de Pourtalès

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yeffeɣ-d deg преди 4 години
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 ?