unjustified dlitem error

[tofi86]

Imapct	Rule	Location	Detail
serious	dlitem	kapitel5.xhtml#epubcfi(/4/14[liste_definition1]/2/2)	Description list item does not have a <dl> parent elementLearn more about Lists
serious	dlitem	kapitel5.xhtml#epubcfi(/4/14[liste_definition1]/2/4)	Description list item does not have a <dl> parent elementLearn more about Lists

and this is my HTML content:

<div class="liste_definition typ1 lastInContainer" id="liste_definition1">
	<dl>
		<dt>Biber</dt>
		<dd>(Castoridae) sind höhere Säugetiere (Eutheria) und gehören zur Ordnung der Nagetiere (Rodentia).</dd>
	</dl>
</div>

Besides the missing but optional <def> element I have no clue why this HTML content is not valid.

[marisademeglio]

Interesting, looks like aXe (the underlying engine used by Ace to analyze HTML documents) reports this error when the file extension is .xhtml but when it's .html, it reports no errors. See attached for identical samples (except for the extension).
test-dl.zip

[mattgarrish]

Yes, this a known issue. Romain and I have opened issues around xhtml handling in axe. Romain was going to talk with them last week about support, so hopefully he'll have some positive news. It's a problem with element name matching when namespaces are involved.

[rdeltour]

Romain was going to talk with them last week about support, so hopefully he'll have some positive news

Wilco and I talked about the pending PRs, including support for DPUB ARIA roles, but we didn't tackle that one (filed in aXe as dequelabs/axe-core#581).

I'll have a look at how to fix this; we need a patch for Ace in any case.