When using a template, the message "Total record count" appears in the middle of the report, between the Header part and the Record list.

Therefore it completely breaks the html structure of the report. It is impossible to get a nice table with the columns heading in the HEADER part and the RECORDS below as stated in the documentation

 https://docs.moodle.org/38/en/Configurable_reports#Templates

HEADER

<table>

<tr> <th>id</th> <th>shortname</th> </tr>

RECORDS

{{<tr> <td>[[id]]</td> <td>[[shortname]]</td>}}

FOOTER

</table>

(Note that to create such a template, you need to deactivate ATTO by choosing "plain text area" in profile, preference,  editor preferences, otherwise the html is automatically corrected after edition (maybe this could be added in the documentation)