If you open the My Account page, and you change your email preferences, your default mouse wheel scroll action, your language, or anything else, and then click the "Save Changes" button, you get a big red error message that says: "The two passwords entered did not match. Your password was not changed." This happens because of two different glitches. The first glitch is that, even when you click the Save Changes button in a different section of your My Account page, such as Preferences, it appears to function exactly the same as clicking Save Changes in the Password section. All changes are saved in all sections of your account. If that's the case, then there shouldn't be a different button for each section, just one at the bottom. The second reason for this appears to be because the first of the two password fields at the bottom of the page, in the Password section of the My Account page, is getting automatically filled in by browsers! It shares the same password ID as the login prompt, so any browser that has saved your password will fill the field in automatically with your current saved password. That shouldn't happen, since this field should only be used for creating a new password, not for entering your current one. Changing the ID of this field would fix this problem. I am using Firefox 90.0.2 (64-bit) for Windows 10.