The top banner also float in the middle when scrolling down or up.

When you go back from an article, the previous page reloads from the top and your position is lost.

It isn’t working that well on mobile, overall.

Works fine for me in Firefox under Linux. (Maybe you're not running an ad blocker?)

Must be an issue with the site itself when viewed in Firefox on Windows; I've run into the same thing every time someone shares it here on HN. I even disabled uBO thinking that might be the cause, but the behavior didn't change. Eventually, I just gave up trying to access it.

Honestly, it's been disruptive enough that I'm considering adding the site to a personal blocklist, just to avoid running into it again. In the few times it's happened, the only way to recover was force-closing the browser, or waiting an excruciating amount of time and with a poorly responding browser try to close the tab.

I am using Firefox on Linux with almost all uBO filters enabled. Not sure what it could be