FM2020 won't generate HTML5 from LOF and LOT files

I have a super simple book made in FM2020. It is meant as design update of the "scientific paper" template which ships with FrameMaker. Only thing is... when I generate a LOF and LOT these documents are not generated when I publish as HTML5. PDF works fine. The book updates ok and the TOC works as expected. But when I generate HTML5 from the book, Publish does not generate html versions of the LOF and LOT.

And I can't figure out why not! Does anybody have a suggestion? What might be a place to look?

The book can be downloaded here:

https://framemaker.dk/SciencePaper-backup.zip