303055 - Dragging tabs confuses browser, causes render failure, locks-up tab

Status: VERIFIED INVALID

(Firefox :: Tabbed Browser, defect)

Description

[Conrad Shultz]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b4) Gecko/20050801 Firefox/1.0+
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b4) Gecko/20050801 Firefox/1.0+

By performing (at least) one specific set of tab maneuvers Firefox (Deer Park)
can be thrown into tab confusion as described in the steps to reproduce.

Reproducible: Always

Steps to Reproduce:
1) Open Firefox and navigate to any website.
2) Open a new, blank tab.  Optionally, navigate to a site within the new tab.
3) Reverse the order of the tabs by dragging/dropping.  It does not matter which
tab is dragged.
Actual Results:  
Both tabs now display the contents of the active tab (that is, the tab that was
active at the time of dragging).  Reloading or renavigating within the
then-inactive tab has no effect (i.e. cannot load a different page), and the tab
sometimes cannot be closed without restarting the browser (though this final
behavior seems rather rare).

Expected Results:  
Moving tabs should only affect the order and not affect the contents of the tabs.

Using default theme, occurs with and without TabBrowserPreferences extension
installed.

I have also verified the bug with three tabs (in this case, dragging the first
tab to the middle).

Comment 1

[Adam Guthrie]

This is almost definitely to blame on /some/ extension that you have intstalled.
Just to be sure, create a new profile and see if you are able to reproduce this.
http://kb.mozillazine.org/Profile

Comment 2

[Conrad Shultz]

(In reply to comment #1)

You are correct (my apologies for your time).  After a process of elimination I
isolated the All-In-One Gestures extension as the culprit.  This seems quite
peculiar to me (it has nothing to do with left-mouse-button operations) but is
apparently the case.

I have consequently dropped the severity to 'minor' and have listed the the
resolution as 'invalid'; will consider filing a more specific extension-related
bug report.