electron issue: videoTrack always has displaySurface set to "monitor"

main.js

const electron = require("electron");
const { app, BrowserWindow } = require('electron')

let win = null
app.whenReady().then(() => {
	win = new BrowserWindow()
	win.loadURL('https://github.com')

	electron.session.defaultSession.setDisplayMediaRequestHandler((request, callback) => {
		callback({
			video: win.webContents.mainFrame,
			audio: undefined,
		});
	});
	electron.session.defaultSession.setPermissionCheckHandler((webContents, permission, requestingOrigin, details ) => {
		return true;
	});
	electron.session.defaultSession.setPermissionRequestHandler((webContents, permission, callback, details ) => {
		return callback(true);
	});
})

package.json

{
  "main": "main.js",
  "scripts": {
    "start": "electron ."
  },
  "devDependencies": {
    "electron": "26.0.0-beta.7"
  },
  "dependencies": {
  }
}