167749 - Error: uncaught exception while closing tab

Status: RESOLVED DUPLICATE of bug 137477

(SeaMonkey :: Tabbed Browser, defect)

Description

[Adam Hauner]

I had two tabs, where without content (but not Untitled) and I can't close them.
Error appear in JS console while closing (same with keyboard shortcut and mouse
click and context menu:

Error: uncaught exception: [Exception... "Component returned failure code:
0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIWebProgress.removeProgressListener]" 
nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)"  location: "JS frame ::
chrome://global/content/bindings/tabbrowser.xml#tabbrowser.removeTab() ::
removeTab :: line 32"  data: no]

2002090908/trunk/W2K

Comment 1

[André Dahlqvist]

Confirmed on Linux. I do not have any steps to reproduce this however. When this
happens, the javascript error occurs in the JavaScript console and the tab is
not closed. I noticed that it only happened on the right-most tab; I could close
the tabs to the left. I will attach a screenshot showing the open tabs I had
when I reproduce this, in the hopes that that might help someone show in which
situations this occurs.

Comment 2

[André Dahlqvist]

Attachment: Screenshot of tab state when the right-most tab "Bug List" could not be closed

Comment 3

[André Dahlqvist]

Another interesting observation, notice that the window title still has the
title of another tab! I still have these tabs open, and I can see that when I
switch to the unclosable tab "Bug List" the window title does not get updated
accordingly. It is as if the tab is never truly activated somehow.

Comment 4

[Adam Hauner]

Mark as dupe of 137477.

*** This bug has been marked as a duplicate of 137477 ***