Special:ExpandTemplates outputs different html than any page on preview/save as well as in Result & Preview sections.
Examples:
code:
<div class="listtest">
* foo
*bar
* baz
*qux
* lorem
*ipsum
</div>
on Special:ExpandTemplates / Preview:
<div class="listtest">
<ul><li> foo
</li><li>bar
</li><li> baz
</li><li>qux
</li><li> lorem
</li><li>ipsum
</li></ul>
</div>
on page preview:
<div class="listtest">
<ul>
<li>foo</li>
<li>bar</li>
<li>baz</li>
<li>qux</li>
<li>lorem</li>
<li>ipsum</li>
</ul>
</div>
(mind the whitespaces which are important for some CSS constructions as well as for some JS)
code:
<table>
<tr>
<th>Header</th>
</tr>
<tr>
<td>foo
bar
baz
qux</td>
</tr>
</table>
on Special:ExpandTemplates / Preview:
<table>
<tr>
<th>Header</th>
</tr>
<tr>
<td>foo
bar
baz
qux</td>
</tr>
</table>
on Special:ExpandTemplates / Result:
<table>
<tr>
<th>Header</th>
</tr>
<tr>
<td>foo
<p>bar
baz
</p>
qux</td>
</tr>
</table>
on page preview:
<table>
<tr>
<th>Header</th>
</tr>
<tr>
<td>foo
<p>bar baz</p>
qux</td>
</tr>
</table>
(mind the <p> tag)
--------------------------
**Version**: 1.23.0
**Severity**: normal
**URL**: https://en.wikipedia.org/wiki/Special:ExpandTemplates?input=%3Cdiv+class%3D%22listtest%22%3E%0A*+foo%0A*bar%0A*+baz%0A*qux%0A*+lorem%0A*ipsum%0A%3C%2Fdiv%3E
**See Also**:
https://bugzilla.wikimedia.org/show_bug.cgi?id=39617