229302 - Combo box starts flashing, and refuses to lose focus

Status: RESOLVED DUPLICATE of bug 232368

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Jason House]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6b) Gecko/20031208
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6b) Gecko/20031208

I think that all the other tidbits describe this bug pretty well (read steps to
reproduce and actual results sections).  I encountered this bug once, then
reproduced it, and then submitted this bug.  I have not played around with it a
lot since, forced closing of mozilla and restarting the browser is a
particularly nasty bug to deal with.

Reproducible: Always

Steps to Reproduce:
1. Go to www.creditexpert.com
2. Click on the "free" sign up link
3. Start entering information, tabing from field to field
4. (All the way until you reach the title combo box)

Actual Results:  
The combo box starts flashing.  Mozilla starts using 100% CPU load and becomes
non-responsive.

Expected Results:  
Combo box gets highlighted, I can optionally make a selection, and then
tab/click to the next field.

Comment 1

[Stefan Borggraefe]

This is caused by a 

<select onfocus="blur()">

Tabbing into the select box seems to cause a endless loop and Mozilla hangs
completely after a few moments.

Comment 2

[Stefan Borggraefe]

Attachment: Minimized testcase

Forgot to mention: I tested this with build 2003122009 on Windows XP.

Comment 3

[Andrew Schultz]

this regressed betwen linux trunk 2003110608 and 2003110708, along with 232368.
 testcase is very similar -- the testcase here has an onfocus handler that
triggers blur.

marking dupe of (newer bug) "Hang when tab into input element with onBlur handler"

*** This bug has been marked as a duplicate of 232368 ***