it's a link to a Microsoft forum which does not work because all the URLS are broken/truncated by HN and MS, which redirects to a login.

You can try the google search: https://www.google.com/search?q=why+microsoft+scroll+bar+so+... (it's the first link)

https://answers.microsoft.com/en-us/windows/forum/all/why-is... this might not work.