Image captions cannot be used in combination with links on images

As reported on the forum, CKEditor allows creating links around the image in a captioned image. This results in a HTML structure roughly resembling the following:

<figure class="image">
<a href="#"><img src="img.jpg" /></a>
<figcaption>Caption</figcaption>
</figure>

This code currently cannot be represented in XWiki syntax which should be considered a bug as when we enabled image captions in CKEditor, we assumed that the resulting HTML could be represented in XWiki syntax.