Bug 2019579 Comment 0 Edit History

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Original comment by
on 
**Found in**

 - Firefox Enterprise 149.0a1 (2026-02-21)

**Tested platforms**

-  Affected platforms: Windows 10/11, MacOS 15.7.4, Ubuntu 24.04

**Steps to reproduce**

    1.Open Firefox enterprise and log in.
    2.Type about:crashparent in the URL bar.
    3. Observe a [new tab opens](https://bugzilla.mozilla.org/show_bug.cgi?id=2019321) but the FF window remains open in the OS dock. 
    4. Try to open the existing window. Window won't open, so close window from dock with Close/CMD+Q (on macOS) .
    5. Try to open the felt client window by selecting the FF enterprise shortcut. 

**Expected result**

    The user is successfully logged in and the browser starts.

**Actual result**
    Clicking on the browser icon does not open the browser.

**Additional notes**

    Killing the Firefox process resolves the issue.
Revision 1 by
on 
**Found in**

 - Firefox Enterprise 149.0a1 (2026-02-21)

**Tested platforms**

-  Affected platforms: Windows 10/11, MacOS 15.7.4, Ubuntu 24.04

**Steps to reproduce**
    1.Open Firefox enterprise and log in.
    2.Type about:crashparent in the URL bar.
    3. Observe a [new tab opens](https://bugzilla.mozilla.org/show_bug.cgi?id=2019321) but the FF window remains open in the OS dock. 
    4. Try to open the existing window. Window won't open, so close window from dock with Close/CMD+Q (on macOS) .
    5. Try to open the felt client window by selecting the FF enterprise shortcut. 

**Expected result**

   The user is successfully logged in and the browser starts.

**Actual result**
   Clicking on the browser icon does not open the browser.

**Additional notes**

   Killing the Firefox process resolves the issue.

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