Whenever I close the webview and reopen it, a flashing white interface appears

[JemmyWang94]

Column( children: [ Container(height: 30, color: Colors.yellow, child: ElevatedButton(onPressed: (){ setState(() { showBrowser = !showBrowser; }); }, child: Container(color: Colors.blue)),), Expanded(child: showBrowser ? Container(color: Colors.red,):ExampleBrowser()), ], )

I use this code to add a button to control the display and hiding of webview.

https://github.com/user-attachments/assets/05649cb5-a762-4c9a-877e-3569aa149a46

[YangLang116]

Is there a good solution?