Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a bug report that matches the one I want to file, without success.

Electron Version

29.2.0

What operating system are you using?

macOS

Operating System Version

Sonoma 14.3.1

What arch are you using?

arm64 (including Apple Silicon)

Last Known Working Electron version

No response

Expected Behavior

In the following code, I declare a subclass of BrowserWindow by the name of CustomWindow.
Then, I instantiate a regular BrowserWindow, as well as a CustomWindow.
Both windows appear.
When I call BrowserWindow.getAllWindows().length, I expect 2 to be returned.

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

class CustomWindow extends BrowserWindow {
  constructor(options) {
    super(options);
  }
}

app.on("ready", () => {
  const win1 = new BrowserWindow();
  const win2 = new CustomWindow();
  const expected = 2;
  const actual = BrowserWindow.getAllWindows().length;
  if (actual != expected)
    throw new Error("Assertion failed");
});

app.on("window-all-closed", () => app.quit());

Actual Behavior

When I call BrowserWindow.getAllWindows().length, 1 is returned.

Testcase Gist URL

No response

Additional Information

No response