User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:98.0) Gecko/20100101 Firefox/98.0

Steps to reproduce:

1. create a mail account with username=original, hostname=original
2. change the mail account username=newusername, hotname=newhostname, so that TB creates the following 2 prefs:
   user_pref("mail.server.server1.realuserName", "newusername");
   user_pref("mail.server.server1.realhostname", "newhostname");
3. use the password manager to save the new username / password

Actual results:

Password manager still displays the original username / hostname which creates confusion (although internally it's using the real ones)

Expected results:

Password manger should display the real username and real hostname (as it's shown in the mail account settings).

This may be related to bug 474277, but I don't think that it was regressed by it (and that would be the "regressed by" field). Bug 474277 only made things consistent within Thunderbird so that it worked properly.