Cursor Movement Causes Window Blur on App Startup

main.js

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

app.whenReady().then(function createWindow () {
  const mainWindow = new BrowserWindow({ width: 1080, height: 720 });

  const browserView = new BrowserView();
  browserView.webContents.loadURL('https://electronjs.org')

  mainWindow.addBrowserView(browserView);
  browserView.setBounds({ x: 0, y: 0, width: 1080, height: 720 });

  // This is the problem:
  browserView.webContents.focus();

  // This fixes it:
  // setTimeout(() => browserView.webContents.focus());
})

package.json

{
  "name": "shocking-sound-quit-u8cib",
  "productName": "shocking-sound-quit-u8cib",
  "description": "My Electron application description",
  "keywords": [],
  "main": "./main.js",
  "version": "1.0.0",
  "author": "leliakin",
  "scripts": {
    "start": "electron ."
  },
  "dependencies": {},
  "devDependencies": {
    "electron": "25.8.1"
  }
}