Pressbooks.pub two level TOC not working

I select two level TOC in theme options, I have H2s in all my chapters, I output a PDF and there are only H1s in the TOC. This has worked in the past, but is not working now. Screenshots attached.



Thanks for flagging this and sorry to hear you’ve run into this issue. I believe it’s related to what you shared in the other thread about your exports. We’ll follow up soon by email with instructions for fixing this bug.