The version attached works fine in my vault and the sandbox, but only after sorting out the errors seen in the formatting when viewed in reading mode.
0. Esercizi.md (34.4 KB)
Original with errors
Modified version
EDIT: The installer you have is out of date:
https://forum.obsidian.md/t/obsidian-release-v1-1-9/50426
The navigation and layout works in the modified file, but only you know if the content is right. Don’t trust anything I have done in terms of content. 