Man page section headers double indented

Man page says:

       -t, --to
              read recipients from the message header

       -u, --user=USER
              operate on USER's mailbox

              Global debugging settings

       --debug-level=LEVEL
              set Mailutils debugging level

       --[no-]debug-line-info show source info with debugging messages

              Configuration handling

       --config-file=FILE
              load this configuration file; implies --no-config


Shouldn't e.g., "Global debugging settings" be unindented instead of
double indented?