TOC issue?

I've run into a conversion issue that I've never seen before. Here's a quick diagram as shown on my Kobo Forma:

Cover - 1 of xx

(Chapter Text)

(Title) - % read

If I pull up the TOC at the bottom of the page, it shows the complete TOC but the current chapter is not highlighted. Clicking on the current chapter takes me to the correct spot, but the % read reverts to 0%.

At the end of that chapter, it rolls over to the next one, but the top line once again shows:

Cover - 1 of xx

(Chapter Text)

(Title) - % read


What in the world is going on?