extremely weird behavior or link or browser, links have a valid inner link url, but do not work Options

[Sentinel166]

There is something really weird with my website, the links in the right navigation bar (table of content) doesnt' work.
When I access the toc in the small screen layout via the button on the right, and click on one of its link, the URL in the URL bar changes, but the page doesn’t reload to point at the headings (specific id attributes) within the page. it just does nothing. pressing "enter" in the address bar does nothing either. Then those url work again but only after having clicked on of those links in the NORMAL layout again.
It boggles my mind. Same behavior regardless of browser.
With this https://drive.google.com/file/d/1Tq4wVlkFdM...?usp=share_link
just open index.html in your browser and reduce the window's width below 604px and click on the upper right button, then on any heading link, then on "back to text". this is a label, not a link, so shouldn't interfer at all.

[pandy]

The OP has found the solution already.