bug: no dropdown in toc, please help

[RolfHut]

Hi all,

I'm working on this book, in this branch: https://github.com/RolfHut/Design-Engineering-voor-Fysici-Dictaat/tree/add-ontwerpopdrachten-to-toc

which is rendered here:

https://rolfhut.github.io/Design-Engineering-voor-Fysici-Dictaat/add-ontwerpopdrachten-to-toc/intro.html

and for the life of me I can't find why the second item under ontwerpopdrachten in the left menu does not get a drop down, where the first on does. The associated page is nicely rendered, it is available as "next" after the preceding page, yet the dropdown doesn't appear.

Can anyone see what is going on here?

thanks in advance

Rolf

[Tom-van-Woudenberg]

Could it be that the headings are a mess in that page? As seen in the errors here: https://github.com/RolfHut/Design-Engineering-voor-Fysici-Dictaat/actions/runs/13118732340

[RolfHut]

that fixed it! Turned out that at the bottom of the page a second lvl 1 header was used. Removing that solved it

[rlanzafame]

Those toc and heading things can be tricky to find. we wanted to have a set of exercises, like we have here: https://teachbooks.io/template/exercises.html
In fact, we already have an issue for it TeachBooks/template#45
I'll link this thread as a case study :)