The worst thing is when I register a new password to a website on my Mac on Firefox and then want to login to the site on my iPhone. I literally have to type th

The worst thing is when I register a new password to a website on my Mac on Firefox and then want to login to the site on my iPhone. I literally have to type the (complicated) password again so that it gets saved in Keychain. Why wont Keychain allow Firefox sync? This seems like an extremely common use case.