289759 - Crash closing about:config with ctrl+w (only) in tab, filter textbox in focus

Status: VERIFIED DUPLICATE of bug 289430

(Firefox :: General, defect)

Description

[William Price]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2) Gecko/20050409 Firefox/1.0+
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2) Gecko/20050409 Firefox/1.0+

Closing a tab that is displaying about:config will crash the browser
if-and-only-if (so it seems) the following conditions are all true:

- (Previously loaded?) tab contains a previously **non-cached/unvisited** page
- about:config is opened in a new tab in the same window (not a different window)
- The about:config tab has the filter textbox focused
- Ctrl+W is used (not the X button) to close the about:config tab

Reproducible: Always

Steps to Reproduce:
1. Load a non-cached page in a tab (I've been using the 1st tab after browser load)
2. Open a new tab; load about:config
3. Leave the filter textbox in-focus
4. Press Ctrl+W to close the tab

Actual Results:  
Application crash

Expected Results:  
Closed the about:config tab

This happened on an existing and a new, default profile; not extension dependent.
See TB4973437Z, TB4973301X.

Comment 1

[William Price]

blocking-aviary1.1 => ?
added keywords: regression, crash

Comment 2

[William Price]

didn't take blocking request; sorry for bugspam

Comment 3

[Peter van der Woude [:Peter6]]

duping

if you put the cursor in the locationbar you can close the tab w/o crash

*** This bug has been marked as a duplicate of 289430 ***