Restore scroll position in Ionic 4 does not work if I changed the route with route reuse before

I`m reusing the route in my Ionic 4 App to filter a list by changing the route without a component reload. This does not work together with Ionic 4 scroll position restore. When I change from the filtered list to a detail page and back, the scroll position is lost.

I created a demo app to demonstrate my problem:

Is this an Ionic 4 bug, or is there a problem with my concept?

Does nobody have an idea? Would be great to get some help