527582 - window.onscroll event handler does not register the correct value of a global variable if variable changed just before and after window.scrollBy is called.

Status: UNCONFIRMED

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

Description

[Gary Haran]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6; en-us) AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.3a1pre) Gecko/20091109 Minefield/3.7a1pre

If I change a global variable value just before calling window.scrollBy(0,1) and then back again the onscroll event handler does not see the correct value.

Reproducible: Always

Steps to Reproduce:
1. Open attachment and load page in FF. 
2. Click scroll button.
3. Look at the document.title 
Actual Results:  
document.title is "false"

Expected Results:  
document.title should be "I would expect this to be in the title."

Check attachment.

Comment 1

[Gary Haran]

Attachment: Test Case For Bug

Comment 2

[Ria Klaassen (not reading all bugmail)]

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.3a1pre) Gecko/20091109 Minefield/3.7a1pre

> document.title should be "I would expect this to be in the title."
only Google Chrome has this outcome.
Firefox, Opera, IE8: "false"

Comment 3

[Neil Deakin]

Scrolling (or any layout or painting for that matter) doesn't occur until the script ends, at which point, you've already changed the title again, so our behaviour looks ok to me.