Paged.js is not paging web components correctly.

Expected Behaviour: When a custom element/web component spans a page it should be paginated to the next page.

Actual Behaviour: Custom elements/web components that span pages repeat the first page or disappear altogether.

Please see the test fixture project here:

https://github.com/rgladwell/pagedjs-wc-fixture

I suspect this is because Paged.js is incorrectly calculating the size of web components, perhaps because they haven't fully rendered yet.