winne2i wrote:

Appears not to be a problem when there's a [[File:…]] between template and paragraph.

Hmm. Parsoid's marking the following paragraph as generated. To investigate.

Here is the processed output of that opening template.

=================================
Szablon:Propozycja
---------------------------------
<table style="" class="metadata plainlinks ambox ambox-notice">
<tr>
<td class="ambox-image">
<div style="width:52px;">[[Plik:Information icon.svg|35px|link=||alt=]]</div></td>
<td class="ambox-text"><center>Artykuł ten został zgłoszony jako kandydat do [[Wikipedia:Artykuły na medal|medalu]].<br>Weź udział w [[Wikipedia:Propozycje do Artykułów na medal/Main Page|dyskusji na ten temat]].</center></td>

</tr></table>
<span style="clear:both;height:0px;line-height:0px;display:block">&nbsp;</span>
[[Kategoria:Propozycje do Artykułów na medal]]

So, the presence of the span with a   forces that span to be wrapped in a paragraph. However, since the wiki page does not have a newline after the transclusion and the following content, the paragraph now contains part content from the template and part content from the top-level page. This then forces Parsoid to hoist the entire paragraph into the wrapping.

Two possible ways to fix this:

• Is the   span required there? If not, it can be removed in the template.
• Add a newline after the transclusion on http://pl.wikipedia.org/w/index.php?title=Ząb_ćwiekowy

However, I now see that the current revision of the page uses a different template that doesn't have this problem.

I am not sure there is anything to be done on the Parsoid end here.