When building multilingual user tours in both Moodle 3.11 and 4.1, I noticed the HTML tags used for designating a specific language to be filtered, don't work with HTML formatted rich text.

Expected behaviour:

the <span class="multilang" lang="en"></span> should wrap around the HTML formatted text with h5 headers and one or more paragraphs. E.g.:

<span class="multilang" lang="en">
<h5>This is a header</h5>
<p>This is some text</p>
</span>

<span class="multilang" lang="nl">
<h5>Dit is een koptekst</h5>
<p>Dit is een alinea met tekst</p>
</span>

This only works if you use plain text and line break tags (<br>)

Observed behaviour:

The <span class="multilang" lang="en"></span> tags close before HTML formatted text is processed. This results in this HTML code in user tour steps:

<span class="multilang" lang="en">
</span>
<h5>This is a header</h5>
<p>This is some text</p>

<span class="multilang" lang="nl">
</span>
<h5>Dit is een koptekst</h5>
<p>Dit is een alinea met tekst</p>

This causes the text to not be filtered and instead appear in two languages in the user tour steps.