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Are you running Firefox in Windows Vista compatibility mode ? Your user agent: *Mozilla/5.0 (Windows NT 6.0; Win64; x64; rv:107.0) Gecko/20100101 Firefox/107.0 Check that you do not run Firefox in compatibility mode. You can open the Properties of the Firefox desktop shortcut via the right-click context menu and check the "Compatibility" tab. Make sure that all items are deselected in the "Compatibility" tab of the Properties window. ---- *https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox *https://support.mozilla.org/en-US/kb/how-clear-firefox-cache *https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox