Maybe it's because I'm on mobile, but all it did is scroll to the top really slowly. It probably took about 5 seconds total, which feels like a lifetime when browsing the web in this day and age. Am I missing something?
Mobile devices are pretty stingy with auto-play sounds, which is probably why this is a bit confusing for you. On desktop with your volume up, it plays elevator music and dings when it gets to the top.