Using FF on Windows 10 Pro 64-bit. This is not a complaint; I’m just curious. My version still says 2.6.4 and the toolbar icon still has a beta label on it. When I check for updates, I’m told there are none - even though the FF Add-ons Manager says the current version is 2.6.5. Oddly, the date of last update for both is Feb 18, 2021.
Please note, PTK works just fine.