Roundcube is web based open source multiuser IMAP client, yesterday I upgraded my older installation to a new stable version 0.8.2.
After successfully installation I was able to see a new redesigned login window with stupid server field.
I have only one IMAP-Server instance and I don’t need this field.
Edit your main config to fix this behavior:
# replaced with line below $rcmail_config['default_host'] = ''; $rcmail_config['default_host'] = '127.0.0.1';
Refresh your page and the server field will disappear;)