Master password does not allow me to manually enter credentials to a site that has saved credentials
I have set a master password in firefox. When I get to a site that has saved credentials the master password login comes up. Sometimes I do not want to use the saved password and cancel this prompt and attempt to enter the credentials directly onto the site.
When I do this the page seems to reload and brings up the master password prompt again. I am unable to login to the site unless I enter the master password.
I must mention that I have noticed this for a particular site http://www.chopracentermeditation.com/bestsellers/ProgramPage.aspx?bookid=169 and that the saved credentials are not auto-filled to this site. I still have to enter the credentials manually even after inputting the master password.
You should only get a master password prompt if there are already passwords saved form the domain.
That shouldn't effect entering the name and password manually if you decide not to enter the MP and cancel the prompt.
You can disable the Password Manager temporarily to avoid such prompts to enter the MP.
- Tools > Options > Security: Passwords:  "Remember passwords for sites"