[tescocles]

Since everyone is complaining about the site rather than the topic - I hate sites that hide the menu bar when you scroll downwards but then show it again when you scroll even slightly upwards. If you scroll up when you're trying to read something that happens to be placed at the top of the viewport, the menu swings down unceremoniously to obscure it. There are so many other options, have a button that pops out the menu or have it there permanently (if you're hiding it because it doesn't fit with the design of the page as you scroll, it's even worse that it just appears in front of the content). Having the trigger to view the menu as scrolling upwards a bit is bad UX anyway as it's not logical - there are very very few cases where scrolling should trigger a non-cosmetic interaction with the page.

I like to align things (new paragraphs etc) at the top of my viewport during long reads, so this happens quite often.