I'm also experiencing this issue with trunks of Thunderbird and Lightning as of the date of posting this comment. I have a master password enabled. This issue DOES NOT occur without Lightning. I have remote calendar services, which are fetched via password protected FTP of which the credentials are stored by Thunderbird.
Not only that, but the prompt for a password reappears whenever Lightning tries to resync the calendar from the remote location, even though the password is saved. Highly irritating.
I'm also experiencing this issue with trunks of Thunderbird and Lightning as of the date of posting this comment. I have a master password enabled. This issue DOES NOT occur without Lightning. I have remote calendar services, which are fetched via password protected FTP of which the credentials are stored by Thunderbird.
Not only that, but the prompt for a password reappears whenever Lightning tries to resync the calendar from the remote location, even though the password is saved. Highly irritating.