[Bug 1870827] [NEW] Firefox hangs after simultaneously opening Chrome/Electron-based applications

[indigocat]

Public bug reported:

When opening Chrome/Electron-based applications while Firefox is open, Firefox' tab contents stop responding, and it becomes necessary to close Firefox and reopen it.
This includes:
- VSCode: https://code.visualstudio.com/download
- Atom: https://atom.io
- Chromium browser

Here's a link to a screenshot that shows Firefox with a "loading"
waiting icon on the center of the tab (applies to any other open tab)

https://imgur.com/PHHr3zt.png

This has been happening since Ubuntu 14.04, but my previous report was quickly dismissed.
I've done fresh installs for 14.04, 16.04 and 18.04, and the problem persists ever since.

OS: Ubuntu
Release: 18.04 LTS (other 18.04-based distros such as elementaryOS exhibit the same behavior)

Firefox: 74.0.1, 64-bit (although the problem happens since 32-bit 60.x
or even earlier)

Current Hardware: Lenovo ThinkPad T410s: Intel i5 540M processor, NVidia
NVS3100M graphics, 8Gb RAM, 480Gb SSD

# Expected behavior
While Firefox is open, any Chrome/Electron-based application that is opened works without affecting Firefox.

# Observed behavior
While Firefox is open, any Chrome/Electron-based application that is opened hangs Firefox, as observed according to the screenshot link provided above.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

** Summary changed:

- Firefox hangs after opening any Chrome/V8-based application
+ Firefox hangs after opening any Chrome/Electron-based application

** Summary changed:

- Firefox hangs after opening any Chrome/Electron-based application
+ Firefox hangs after opening Chrome/Electron-based applications

** Description changed:

  When opening Chrome/Electron-based applications while Firefox is open, Firefox' tab contents stop responding, and it becomes necessary to close Firefox and reopen it.
  This includes:
  - VSCode: https://code.visualstudio.com/download
  - Atom: https://atom.io
  - Chromium browser
  
  Here's a link to a screenshot that shows Firefox with a "loading"
  waiting icon on the center of the tab (applies to any other open tab)
  
  https://imgur.com/PHHr3zt.png
  
- 
  This has been happening since Ubuntu 14.04, but my previous report was quickly dismissed.
  I've done fresh installs for 14.04, 16.04 and 18.04, and the problem persists ever since.
  
- 
  OS: Ubuntu
  Release: 18.04 LTS (other 18.04-based distros such as elementaryOS exhibit the same behavior)
- Firefox: 74.0.1, 64-bit (although the problem happens since 32-bit 60.x or even earlier)
  
- # Expected bevavior
+ Firefox: 74.0.1, 64-bit (although the problem happens since 32-bit 60.x
+ or even earlier)
+ 
+ Hardware: Lenovo ThinkPad T410s: Intel i5 540M processor, NVidia
+ NVS3100M graphics, 8Gb RAM, 480Gb SSD
+ 
+ # Expected behavior
  While Firefox is open, any Chrome/Electron-based application that is opened works without affecting Firefox.
  
  # Observed behavior
  While Firefox is open, any Chrome/Electron-based application that is opened hangs Firefox, as observed according to the screenshot link provided above.

** Description changed:

  When opening Chrome/Electron-based applications while Firefox is open, Firefox' tab contents stop responding, and it becomes necessary to close Firefox and reopen it.
  This includes:
  - VSCode: https://code.visualstudio.com/download
  - Atom: https://atom.io
  - Chromium browser
  
  Here's a link to a screenshot that shows Firefox with a "loading"
  waiting icon on the center of the tab (applies to any other open tab)
  
  https://imgur.com/PHHr3zt.png
  
  This has been happening since Ubuntu 14.04, but my previous report was quickly dismissed.
  I've done fresh installs for 14.04, 16.04 and 18.04, and the problem persists ever since.
  
  OS: Ubuntu
  Release: 18.04 LTS (other 18.04-based distros such as elementaryOS exhibit the same behavior)
  
  Firefox: 74.0.1, 64-bit (although the problem happens since 32-bit 60.x
  or even earlier)
  
- Hardware: Lenovo ThinkPad T410s: Intel i5 540M processor, NVidia
+ Current Hardware: Lenovo ThinkPad T410s: Intel i5 540M processor, NVidia
  NVS3100M graphics, 8Gb RAM, 480Gb SSD
  
  # Expected behavior
  While Firefox is open, any Chrome/Electron-based application that is opened works without affecting Firefox.
  
  # Observed behavior
  While Firefox is open, any Chrome/Electron-based application that is opened hangs Firefox, as observed according to the screenshot link provided above.

** Summary changed:

- Firefox hangs after opening Chrome/Electron-based applications
+ Firefox hangs after simultaneously opening Chrome/Electron-based applications

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https://bugs.launchpad.net/bugs/1870827

Title:
  Firefox hangs after simultaneously opening Chrome/Electron-based
  applications

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