I finally had time to look into this. Thank you for the suggestion.
markdown-it and markdown-it-footnote behave as I’d expect. I confirmed this with some simple unit tests.
The problem seems to arise when I try to click on the footnote in a topic. Here is what it’s like for me.
First, I try to click the “…” in the nested footnote, which reloads the page; then I try to click the “[2]” link in the nested footnote, for which there is no corresponding HTML anchor.
What can I do about this?
Many thanks.