navigation bar disappears

[include]

Hi,

I am having a weird behavior - each time I click a link in the body of the page; my left navigation bar disappears.
I don't know if this might be a bug or just some misconfiguration I've done.

Any tip? :)

Cheers,
include

[squidfunk]

Hard to say without looking at your configuration. Does this also happen with a mint installation or on the official Material for MkDocs docs?