If some multi-paragraph text is stroke using <del>...</del> tags and enclosed into a <div> section, the HTML code generated by parser is incorrect. Parser extends range of the <del> section to the end of <div>.
This works fine, when stroke text is outside any div.
The workaround is to add an extra unbalanced </del> to the wikicode. However I doubt this is a right workaround as this may cause problems for wikicode parsers like VE.
Examples shown here:
Problem appeared on talk pages when deleted (stroke) content contains multi-paragraph templates.