BrowserWindow won't go fullscreen on instantiation on Ubuntu

[benfrancis]

Preflight Checklist

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

Issue Details

• Electron Version:
  • 7.1.2
• Operating System:
  • Ubuntu 18.04.3 LTS
• Last Known Working Electron version:
  • 6.0.6

Expected Behavior

BrowserWindow created in fullscreen mode

Actual Behavior

Can see toolbar with File, Edit, View etc. menus

To Reproduce

$ git clone https://github.com/webianproject/shell-kiosk.git
$ cd shell-kiosk
$ npm install
$ npm start

BrowserView is instantiated here https://github.com/webianproject/shell-kiosk/blob/master/chrome.js#L17

    this.mainWindow = new BrowserWindow({
      fullscreen: true,
      webPreferences: {
        nodeIntegration: true,
        webviewTag: true
      }
    });

Additional Information

Used to work on Electron 6.0.6. First noticed the problem after upgrading to Electron 7.1.2.
Still works on Mac OS.

[benfrancis]

Likely related to or a duplicate of #21268

[benfrancis]

Note: Bug also reproduces on Ubuntu Core.

[benfrancis]

As per #21088 (comment), Menu.setApplicationMenu(null) makes the offending menu disappear and the application takes up the whole screen.

So on reflection, the issue may not be that the BrowserWindow isn't going fullscreen, but that the menu is displayed when it shouldn't be.

[lkostrowski]

I have the same problem on Ubuntu 20.x, kiosk doesnt hide icons tray :<
I used hack with setting app size using display bounds for now

[electron-triage]

The Electron version reported on this issue is no longer supported. See our supported versions documentation.

If this is still reproducible on a supported version, please open a new issue with any other new information that a maintainer should know.

Thank you for taking the time to report this issue and helping to make Electron better! Your help is appreciated.

[benfrancis]

I can verify that this bug no longer reproduces in Electron 9.4.3 when running under Ubuntu Desktop.