That picture show a blank background that happens when you open reply chat and close it. But u still can scroll even on blank but u cant see or click any on back blank background, to remove it u have to reopen the app.
2 Major Differences an app is Where Code is Actually being used to Launch an Application via an API, and or an Endpoint. In This Case, Roblox has not Launched an Official, Developer Forum Application, Under a Registered Company. Yet.
Shortcut: a Short Route, to a Website via an Application by clicking on a Area on your Mobile Device, which tells the Web Browser, of user Preference to launch. as THAT SAME BROWSER, There’s Major Differences.
I’ve been a Software Engineer for 6 Years, there’s 2 major differences.
Once again, don’t call it an App. It’s a Short-Cut, not an Application. it doesn’t have Background processes. Code via a Clickable Button on your Home-Page that opens a UI ( Well it does it uses Safari or Chrome ) , or Has any type of Coordination with Roblox.
Chrome themselves call it a PWA (progressive web app), so ‘app’ is the right term (or at least a bit more correct than ‘shortcut’). It is also worth noting that there are some differences between the site and the PWA so issues like this can occur specifically one of them.