Cannot auto scroll in mobile devices, when useWindowAsScrollContainer is true

[lyz810]

document.scrollingElement is BODY in mobile devices, and HTML in PC. When set useWindowAsScrollContainer to be true, AutoScroller will use document.scrollingElement(here is BODY element), the code can be found in https://github.com/clauderic/react-sortable-hoc/blob/master/src/SortableContainer/index.js#L93

However, in this case, document.body.clientHeight is always equal with document.body.scrollHeight.So, isBottom here will always be true, and cannot auto scroll. https://github.com/clauderic/react-sortable-hoc/blob/master/src/AutoScroller/index.js#L40

I tried to replace const isBottom = scrollHeight - scrollTop - clientHeight === 0; with const isBottom = scrollHeight - scrollTop - (this.container === document.scrollingElement ? window.innerHeight : clientHeight) === 0;, and it works.

this.container === document.scrollingElement will be true, when we set useWindowAsScrollContainer to be true

<SortableList
   lockAxis="y"
   shouldCancelStart={() => false}
    pressDelay={100}
    helperContainer={() => this.formRef.current}
    useWindowAsScrollContainer
     lockToContainerEdges
 />