264103 - Extensions shouldn't be allowed to take over vital commands (e.g. quit)

Status: VERIFIED WONTFIX

(Firefox :: Menus, defect)

Description

[Jennifer]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.3) Gecko/20041012 Firefox/0.10
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.3) Gecko/20041012 Firefox/0.10

Pressing the quit command in today's nightly (see build details) does not result
in a quit, nor does right-clicking on the icon in the Dock and selecting Quit.
The only way to shut it down is to right-click on the dock icon, then hold down
Option (changing "Quit" to "Force Quit") and selecting that.

Reproducible: Always
Steps to Reproduce:
1. open Firefox
2. select command-Q or right-click dock icon and select Quit

Actual Results:  
Firefox continues to run with no apparent notice of the quit command if using
the dock icon; if using command-Q, the "Firefox" menu flashes as normally is the
case, but as soon as the keys are released, it goes back to normal.

Expected Results:  
Quit normally

Have not been able to link failure to quit to any installed extension in testing
thus far (is there a simple way to automatically start Firefox with no
extensions loading?)

Comment 1

[Jennifer]

Attachment: QuickTime animation showing Dock-based quit failure

Comment 2

[Jennifer]

Attachment: QuickTime animation showing menu-based quit failure

Comment 3

[Jennifer]

Attachment: QuickTime animation showing keyboard-based quit failure

Comment 4

[Peter Zillmann]

reporter: You can start Firefox with extensions disabled by using the -safe-mode
switch. More information is available in the following Mozillazine Knowledge
Base entry.

http://kb.mozillazine.org/index.phtml?title=Safe_Mode_(Firefox)

Comment 5

[Jennifer]

After a bit more testing (and advice on how to enable safemode) I think it's an
extension problem after all (it doesn't happen in a fresh profile either) so I
think it's not so critical after all and is, despite my tests pre-report, an
extension interfering with the normal menus.

I'm hesitant to touch the blocker flags since I'm not an active developer (I
just report bugs I come across) but I don't think it's a "major" bug anymore.
This problem is better summarized as 'nothing should be allowed to overwrite
major key commands' (e.g. print, quit, etc) because it causes problems like this
one (and extraneous bug reports like this one) so the summary is now reflecting
that fact.

Comment 6

[Jesse Ruderman]

Firefox can't prevent extensions from doing anything.  Please tell the extension
author about the bug in the extension.  If Firefox made it too easy for an
extension author to break the command accidentally, file a bug for that.