react-sticky: 'getBoundingClientRect' of null error when using together with react-router

I have nested StickyContainers. One global (that is available all the time) and two containers that are inside routes. When switching those two routes back and forth quickly, I will get the following error:

Uncaught TypeError: Cannot read property 'getBoundingClientRect' of null

in the following line: https://github.com/captivationsoftware/react-sticky/blob/43a370d2810215de1b7d9c7a5986d860c52206e1/src/Container.js#L47

Seems like react-sticky is trying to access an unmounted(?) container and therefore is not getting the node.

The StickyContainer inside the routes is wrapped inside a div (that is inside the route component):

<Router render={() => (
  <div>
    <StickyContainer>
       // ...
     </StickyContainer>
  </div>
)}>

I guess the easiest solution for this is to wrap the code that throws the error with:

if (this.node) {
  // ...
}

So this error doesn’t happen anymore. For me it doesn’t break the functionality, It just throws the error.

Or maybe I have done something wrong with using the StickyContainer.

Can you give me any feedback on this?