mod/assign/templates/grading_navigation.mustache has unbalanced <span> tag

Create a course with: An assignment activity; A student enrolled. Logged in as the student add an assignment submission. Logged in as the teacher or site admin, navigate into the assignment activity and click Grade . View the web page HTML source code. Search for "Due date" and check that there is no </span> following the </div> containing this string. For example, HTML fragment should be something like: <div role="tooltip" id="tooltip-5eecc340d363b5eecc340d05cf2" class="accesshide"> Due date: Friday, 26 June 2020, 12:00 AM <br>Time remaining: 6 days 9 hours </div> Not: <div role="tooltip" id="tooltip-5eecc340d363b5eecc340d05cf2" class="accesshide"> Due date: Friday, 26 June 2020, 12:00 AM <br>Time remaining: 6 days 9 hours </div> </span>