Some websites do not recognize passwords filled out with Password Hasher. They still think the password is missing and do not continue with login.
E.g.
1 .visit https://www.saturn.de/
2. click "login"
3. go to the password field,
4. open Password Hasher
5. type master password
6. Click ok
7. Try to login
Expected result
Login works
Observed result
Website does not login, marks the password field as "red" as if the password was not typed at all, even though the password files was filled with characters.
Firefox 79 x64, Windows 10