XML3D does not initialize when adding xml3d tag as part of hierarchy

[wherget]

When adding a structure such as

<div>
 <xml3d>
   <!--- more stuff -->
 </xml3d>
</div>

to the DOM (using, e.g. appendChild), the MutationRecord's addedNodes list only contains the toplevel <div>. Since xml3d.js only checks the nodes in the list, the newly added xml3d tag is missed, and nothing is initialized.

[csvurt]

I'll add this to the upcoming 4.9.3 hotfix