Styled scrollbars cause horrible flickering, especially on sites with side panel menus

[styromaniac]

Try this CSS on a site with a side panel menu:

    ::-webkit-scrollbar {
        width: 10px
    }

    ::-webkit-scrollbar-track {
        background: 0 0;
        border-radius: 5px
    }

    ::-webkit-scrollbar-thumb {
        background: rgba(180,180,180,.5);
        border-radius: 5px
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #af3bff
    }