Thanks for the feedback! Sorry to hear you are having issues. I'd love to take a look into the Magic Mouse issue for you, although it may be difficult since I don't have a Mac.

If you could either file a bug report on GitHub (https://github.com/WesleyBranton/Custom-Scrollbar/issues/new) or email me at addons@wesleybranton.com with more information, it would be much appreciated. It's helpful if you include your current settings and, if the issue is with a specific website, the URL for that website. Thanks!