it's beyond the scope of this fix, but I was doing a transform yesterday and changed getHTMLSerializer from repoze.xmliter with lxml.etree.HTMLParser. Should we actually move to that one?
repoze.itertools does not look much taken care of 😓
And actually it is just a tiny wrapper to lxml...
_Originally posted by @gforcada in https://github.com/plone/plone.app.theming/pull/239#discussion_r1586151597_