No prompt for username on saved sessions w/o username

WinSCP 5.5.1 (Build 3970).

Have saved sessions, with no username defined, but when connecting, it does not prompt me for username, but only password.

-- If I use blank New Site session and type in host name, with blank user name, it prompts for username as expected.
-- If I use saved session with Host name and username filled in, it displays Using username "username" and prompts for just password as expected.
-- If I use saved session with just Host name filled in but no username, it just prompts for password, without any mention of username (i.e. no Using username "username") for me to know what it is trying to use for username.

Anyone experiencing this?

I wan not able to reproduce this.

Please attach a full log file showing the problem (using the latest version of WinSCP).

Thanks. Just sent you an email with log and screenshots.

Thanks for the log. You are not prompted for (EDIT) username, because you have selected GSSAPI authentication. In that case WinSCP leaves username deduction to GSSAPI. Turn off GSSAPI, if you are not actually using it (it's turned off by default).

Ah ok. It must have set that when I imported the list from putty during upgrade/install of WinSCP. Good to know.

Thanks!