POP3 Mailboxes expect a password even if XOAUTH2 is selected

[Hildy]

When configuring a mailbox (in this case O365) and selecting POP3, the form validation wants a password, even though it doesn't need one.

[jstanden]

This is just the 'Test' button, right? The form doesn't require a password field.

[Hildy]

Perhaps? Client reported it as a difference between pop3 and imap behavior in linked ticket.