Warning "No items found in the List container" after unmounting

Hi!

I would like to report that there seems to be a problem with proper cleanup after List component is unmounted

It always logs a warning: No items found in the List container. Did you forget to pass & spread thepropsparam in renderList? and it can't be fixed as far I can see (I do of course pass & spread props param).

It's very easy to reproduce in the demo page of this library 😕 😅

Steps to reproduce:

go to https://react-movable.netlify.app/?story=list--basic
sort 1 item
click on the link to the next example eg. https://react-movable.netlify.app/?story=list--custom-component
the warning is logged. Every time you navigate to another example

In my application React logs a big warning also

Warning: Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in the componentWillUnmount method.
    at List (webpack://<app name>/./node_modules/react-movable/lib/List.js?:54:28)

In my application it's a normal use case to unmount the List and then mount new one because I have tabs menu.

I am not familiar enough with source code to find the cause at the moment but maybe @tajo you are able to look at it?

tajo / react-movable

Warning "No items found in the List container" after unmounting #73