566536 - Alert dialog is empty or unresponsive when the form target page contains an alert followed by window.location change

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[u383244]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3

Submitting a form to a page which contains an alert() followed by a window.location causes the alert dialog to pop up but the dialog has no content.

On my machine you have to submit the form at least THREE TIMES for the bug to be visible.

Mousing over the dialog reveals the content.

Clicking other parts of the UI makes the dialog unresponsive until repeatedly clicked. You have to click inside the alert box the same number of times you've clicked outside of it.

Closing the tab/window resets the behavior.

1.html:
<form action="2.html" method="get">
	<input type="submit" value="Submit" />
</form>

2.html:
<script language="JavaScript">
	alert('The Prepared Alert was updated successfully.');
	window.location='1.html';
</script>


Reproducible: Always

Steps to Reproduce:
1. Create the two pages as outlined above
2. Open the first page (1.html)
3. Click the Submit button
4. Alert box pops up. Click OK. You are redirected back to the first page.
5. Perform steps 3. and 4. two more times. Keep your mouse out of the dialog till you see the button. On the third try the dialog will be empty
6. Mouse over the dialog. The contents appear.

To get the dialog to be unresponsive:
1. Perform the steps 1-5 above to get the dialog to be blank.
2. Click any number of times (n) the dialog close button (X), title bar, or the UI outside of the dialog
3. Mouse over the dialog to reveal the contents
4. Click the OK button n + 1 times to get the dialog to respond to the click.
Actual Results:  
1. The dialog contents were not visible. 
2. The dialog was unresponsive if I clicked outside of the dialog first.

Expected Results:  
1. The dialog contents should be visible as soon as the dialog appears.
2. The dialog should be responsive on the first click.

Comment 1

[Tyler Downer [He/Him]]

Reporter, are you still seeing this issue with Firefox 3.6.13 or later in safe mode? If not, please close. These links can help you in your testing.
http://support.mozilla.com/kb/Safe+Mode
http://support.mozilla.com/kb/Managing+profiles

You can also try to reproduce in Firefox 4 Beta 8 or later, there are many improvements in the new version, http://www.mozilla.com/en-US/firefox/all-beta.html

Comment 2

[Tyler Downer [He/Him]]

No reply, INCOMPLETE. Please retest with Firefox 3.6.13 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.

Comment 3

[u383244]

I have created a new profile and launched Firefox in safe mode using that profile.
Using 3.6.15 the bug is still there.
Using Firefox4 RC the bug is not there.

Comment 4

[Tyler Downer [He/Him]]

Then we will close as WFM. The fix won't be back-ported to Firefox 3.6 since it isn't a security fix. Please update to firefox 4.