I updated my Firefox from ver 59 to ver 61. I had to uninstall the previous one and install the new one from the package manager in Linux (though the profile was kept). After the update the address bar autocomplete works only in some cases (e.g "Fa" for facebook.com, "mai" for mail.google.com), but not in most of the cases (e.g "tra" for translate.google.com, "gma" for gmail.com or mail.google.com). 1) I have tried the safe mode, no use 2) Options->Search->Default Search Engine: "Provide search suggestions" and "Show search suggestions in address bar results" are ticked. Unticking does not help. // Options->Privacy->History: Firefox will rememeber history // Options->Privacy->Address bar: all 3 suggestions ticked 3) All about:config "autocomplete", "autofill", "fixup" values are default (e.g browser.urlbar.autoFill=true, browser.urlbar.autoFill.typed=true, browser.urlbar.autocomplete.enabled=true) 4) I checked for "Places" integrity: "> Task: checkIntegrity + The database is sane > Task: invalidateCaches + The caches have been invalidated > Task: checkCoherence + The database is coherent > Task: expire + Database cleaned up > Task: vacuum + Initial database size is 64416KiB + The database has been vacuumed + Final database size is 63488KiB > Task: stats + Places.sqlite size is 63488KiB + Favicons.sqlite size is 42144KiB + pragma_user_version is 47 + pragma_page_size is 32768 + pragma_cache_size is -2048 + pragma_journal_mode is wal + pragma_synchronous is 1" (etc... If necessary I can post more here)