How to keep the current page/view when lazy loading?

I do not know whether it is possible to instruct Suspense to use the current page/view as the fallback component until the next view is ready to be rendered.

Indeed, in order to achieve YouTube or GitHub like loading with a top linear progress bar on the current view, we need a way to instruct the Suspense component to not unmount the current view straight away or to just add an additional child component to the current view.

The documentation would benefit from adding such example, as this behaviour is now the industry norm and it greatly improves the UX. As on StackOverflow and other relevant forums no one seems to know how to do:
https://stackoverflow.com/questions/55669865/is-it-possible-to-keep-the-current-component-mounted-as-the-fallback-content-f
https://stackoverflow.com/questions/57741868/how-can-react-suspense-remain-on-the-same-page-lazyloading

However, I am not sure this is possible right now, and if not putting it on the backlog as a new feature will be useful.

まず、issue に記載された Suspense の動作と、リンクされている 2 つのディスカッションを確認し、lazy loading 中も現在のビューをマウントしたままにできるかどうかを判断します。可能であればローディングの例を使ってサポートされている動作を文書化し、そうでなければ要求された fallback の動作は現在利用できないことを明確にします。