Thank you KevinH & DiapDealer for your insights into Sigil standard structure vs. non-standard structure. I must admit that after using Sigil, I now derive comfort in having all my epubs being standardized to the same structure — which is funny because when I first started using Sigil I was horrified that it re-structured every epub that I loaded into it!
But on to issue-reporting. I may have found one related to Page Lists, though it's not specific to 0.9.991. I thought it was, but then I went back to 0.9.18 and found it had the same issue. Not sure if this is known or expected, but I report it in case it is helpful.
- Take valid epub3 with nav and ncx, where both nav and ncx have a page list (<nav epub:type="page-list"> and <pageList>)
- Delete a file
- opf updates automatically
- edit TOC and <nav epub:type="toc"> updates automatically
- use Epub3 Tools to Generate NCX and <navMap> updates automatically
- however both <nav epub:type="page-list"> and <pageList> fail to update
Let me know if any additional info would be helpful.