261981 - Firefox crashes on pressing CTRL+SHIFT+TAB just after posting data through a form

Status: RESOLVED DUPLICATE of bug 243522

(Firefox :: Tabbed Browser, defect)

Description

[Richard Aspden]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10

With LiveJournal as an example, typing in a comment, tabbing to the "Post
comment" box and hitting space or enter to submit the form, then immediately
hitting CTRL+SHIFT+TAB causes Firefox to lock totally, becoming unresponsive to
keyboard and mouse. This obviously only occurs when more than one tab is open,
and I tend to have around 10 open whenever this happens, much to my annoyance at
losing my place.

Unfortunately, I can only sporadically reproduce the bug. It seems similar to
bug 247851 which has been reported. I noticed this behaviour in Seamonkey too,
but assumed it was to do with Multizilla, which I also had installed at the
time. Now I'm not so sure, but this is pretty serious. It may not be a commonly
reproduced bug, but it definately locks it up, and I've checked it on a few
machines. The form data tends to get posted, even though it crashes.

Reproducible: Sometimes
Steps to Reproduce:
1. Find a form to enter data into. Comment boxes on blogs are good examples.
2. Write a reasonable amount of text in it. I find it tends to occur after a
couple of paragraphs.
3. Tab to the form submit button, then hit CTRL+SHIFT+TAB about half a second to
1.5 seconds after.
Actual Results:  
The browser locks up totally. No response to keyboard or mouse.

Expected Results:  
Displayed the requested tab, and continued the form submission in the previous tab.

Firefox is in basic configuration. This occured with and without the TabBrowser
Extensions installed.

Machines tested have 1GB RAM, running XP Pro.

Comment 1

[Ryan Polk (Quark)]

*** This bug has been marked as a duplicate of 243522 ***