how to use webview2 in linux

[Fevola]

Hello, I want to use WebView2 in a Linux environment. I have installed Ubuntu 22.04 and Ubuntu 24.04 in VMware and created a new Uno Desktop project. I followed the example to install libwebkit2gtk and added the necessary code, but when I run the program, I only get a blank window. An error occurs, and the program crashes:

Gdk-WARNING **: 21:51:21.366: ../../../../../gdk/x11/gdkwindow-x11.c:5653 drawable is not a native X11 window
X Error of failed request:  BadWindow (invalid Window parameter)
  Major opcode of failed request:  3 (X_GetWindowAttributes)
  Resource id in failed request:  0x0
  Serial number of failed request:  100
  Current serial number in output stream:  101

After setting GDK_BACKEND=x11, the error message disappears, but the window remains blank. I suspect the content is there because occasionally, when I drag the window, I can briefly see some thing that should be inside the window, like this:

However, as you can see, the entire window remains blank, and two windows appear—it's not just embedded in the Uno application.

I think I might have made a mistake somewhere. Does anyone know the correct steps or behavior to resolve this? Thanks!