I am trying to display an HTML data in webview. You can copy a single word in IOS, but no copying is triggered in Android, why is this?

So as it comes from the title, consider I have a scrollable widget in flutter web with different widgets inside of it. I want to freely scroll in web, but when I reach to the webview widget and my mouse is hovered on it, I am only able to scroll the webview content and when I reach at the bottom/top of the webview content, then I should be able to scroll down/up. But the actual thing happening here is that when I hover on webview, I am only able to scroll the webview content and not the parent widget.

I need to expose some functionality that can be called from web app that is called in flutter_webview package so this website can access device native resources through app. but not directly accessing them but through my functions so it can be monitored and controlled. The idea is to create a channel or to take advantage of the native app functionality although it is a web view and make the most of it.