Minimum code to reproduce `setContentProtection` issue

main.js

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

function createWindow () {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
  })

  win.loadURL("https://www.google.com");
}

app.whenReady().then(() => {
  createWindow()

  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow()
    }
  })
})

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on("browser-window-created", (event, window) => {
  window.setContentProtection(false);
});

package.json

{
  "name": "my-electron-app",
  "version": "1.0.0",
  "description": "Hello World!",
  "main": "main.js",
  "author": "Jane Doe",
  "license": "MIT",
  "scripts": {
    "start": "electron ."
  },
  "devDependencies": {
    "electron": "15.2.0"
  }
}