@idefix37 thanks for pointing out the browser offline mode. I just tried it with iOS via Opera (in my experience the most enforcing mobile browser to request a non-mobile website representation) but fell victim to the stuck download bug.
This experimental browser feature already goes in the right direction.
What I imagine is more automatic and not limited to the browser version. In pictures, substituting the following example screens automatically with last fetched data would be the objective:
Does such an automatic offline mode for mobile devices fit on the roadmap? How can the user base help to approach this?