FILE: save as: lots of criticals
when opening the dialog: lots! of messages in terminal.
(gnumeric:2199527): GLib-GIO-CRITICAL **: 08:28:21.872: GFileInfo created without standard::is-hidden
(gnumeric:2199527): GLib-GIO-CRITICAL **: 08:28:21.872: file ../../../gio/gfileinfo.c: line 1633 (g_file_info_get_is_hidden): should not be reached
(gnumeric:2199527): GLib-GIO-CRITICAL **: 08:28:21.872: GFileInfo created without standard::is-backup
(gnumeric:2199527): GLib-GIO-CRITICAL **: 08:28:21.872: file ../../../gio/gfileinfo.c: line 1655 (g_file_info_get_is_backup): should not be reached