We've found a couple of sites that have xpacket sections: talsunovads.lv and hlz.de.

Checking the nodeType, it seems they are considered nodeType 7. As we are not handling that use case, it returns an error: TypeError: Cannot read properties of undefined (reading 'length').

We have to decide what to do with these nodes. Should we do the same as with CDATA nodes? It seems a similar case, as they are included inside the SVGs.