In https://www.mediawiki.org/wiki/Help:Extension:Translate/Page_translation_administration#Markup_examples
we see the following markup example as a correct example:
<translate>== Culture ==</translate>
However this markup will confuse the section editing feature.
For example, if an article contains the following wikitext
First section
text
<translate>==Second section==</translate>
text2
Third section
text3
and we click on the "edit source" link next to "Second section", we will get an edit box containing the third section.
Version: unspecified
Severity: normal