Thanks so much for sharing, cortesbr!! I believe this is either a browser or extension issue. After closely inspecting, I think the page is actually still there & active, the browser just isn't showing it to you for some reason.

You do click several places, but at 0:07 you click somewhere that actually has an anchor link. At 0:10 the site comes back and briefly shows the linked anchor that was clicked at 0:07 is "Allowing Admins to Update Movies and Clear Values". Moments later the page for that clicked lesson loads.

I've been trying for the past half hour or so to replicate this on my Windows machine using Edge, and haven't had any luck. Browsers, Edge included, have a number of battery/resource saving features like putting inactive tabs to sleep. This could be one cause - though I tested several Edge settings and couldn't replicate. Extensions are also common sources of issues.

I'll keep an eye out and try replicating further, but in the meantime I'd recommend giving it a go in a private/incognito window to see if that fixes the issue you're having. If I had to place a wager, I'd guess it's an extension.