241170 - sometimes cannot close a [first] tab

Status: RESOLVED WORKSFORME

(Firefox :: Toolbars and Customization, defect)

Description

[Oleg Sidletskiy]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7b) Gecko/20040412 Firefox/0.8.0+
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7b) Gecko/20040412 Firefox/0.8.0+

After a period of browsing the very first tab fails to close, when attemping to
close following error appears in JS console:

Error: uncaught exception: [Exception... "Component returned failure code:
0x80004005 (NS_ERROR_FAILURE) [nsIWebProgress.removeProgressListener]" 
nsresult: "0x80004005 (NS_ERROR_FAILURE)"  location: "JS frame ::
chrome://global/content/bindings/tabbrowser.xml :: removeTab :: line 839"  data: no]

this error appears when trying to close either by using the middle mosue button
or my using right-click "Close Tab".

Also the when simply switching to the problematic tab the following error
appears in JS console:

Error: uncaught exception: [Exception... "Component returned failure code:
0x80004005 (NS_ERROR_FAILURE) [nsIWebNavigation.canGoBack]"  nsresult:
"0x80004005 (NS_ERROR_FAILURE)"  location: "JS frame ::
chrome://browser/content/browser.js :: UpdateBackForwardButtons :: line 115" 
data: no]

Also, sometimes when trying to close the problematic tab by using middle click,
when it's *not* in focus, causes the whole tab bar to dissapear, but it
reappears when a new tab is created.

much more rarely the following error is seen in JS console (compared to other
two errors:

Error: CPxPop17 is not defined



Reproducible: Didn't try
Steps to Reproduce:
1.
2.
3.

Actual Results:  
Tab fails to close

Expected Results:  
Tab closes.

I remember this happening once beforce, I think that time it happened on the
same website - when browsing Tweak3D.net forums:
http://bbs.pcstats.com/tweak3d/

Sorry, can't provide more info this bug is random and very hard to reproduce.

Comment 1

[Mike Connor [:mconnor]]

any extensions currently installed?

Comment 2

[Oleg Sidletskiy]

User Agent Switcher and Firesomething.

This bug will probably be closed as INVALID because it's hard to reproduce and I
can't provide any more info, but maybe those JS console errors will provide some
useful information.

Note: the 'CPxPop17 is not defined' error is completely unrelated

Comment 3

[Oleg Sidletskiy]

I'm gonna resolve this as WFM since I haven't seen this bug for a long time and
don't have a way to reproduce it. Maybe I'll reopen it when I experience it ever
again.