vertical: true with "unslick" mode make big height of box (empty space)

[mixalbl4-127]

Example: https://codesandbox.io/s/react-slick-playground-forked-jcn3k?file=/index.js

This bug because:

1. Missed style: listStyle here (slick-list without any limit):

    if (this.props.unslick) {
      listProps = { className: "slick-list" };
      innerSliderProps = { className };
    }

2. Wrong calculation here for vertical && unslick, because no cloned items here:

const trackChildren = spec.slideCount + 2 * spec.slidesToShow;

[mixalbl4-127]

@akiran check this pull please

[vmarcel]

Please check this pull request. We need this change soon

[shumpaga]

Also waiting for this ⏳

[Nihal-10]

i am facing same issue any solutions?