581450 - Page will be messed up after pressing the middle mouse button and scrolling

Status: VERIFIED DUPLICATE of bug 579736

(Core :: DOM: Core & HTML, defect)

Description

[Jan Bambach [:Jan]]

User-Agent:       Mozilla/5.0 (X11; Linux i686; rv:2.0b3pre) Gecko/20100723 Minefield/4.0b3pre
Build Identifier: Mozilla/5.0 (X11; Linux i686; rv:2.0b3pre) Gecko/20100723 Minefield/4.0b3pre

The website will be messed up if website at another tab is loading. It appears on any website and every time I scroll the page after clicking the middle mouse button.

Reproducible: Sometimes

Steps to Reproduce:
1. Download a nightly
2. Install it
3. Start it
4. Go to a random page
5. Click a link with the middle mouse button and
6. scroll the page (while a another website is being loaded)

If those steps didn't work...

5. click a link with the middle mouse button _while_ scrolling
Actual Results:  
Page is messed up

Expected Results:  
Page should be displayed correctly

Comment 1

[Jan Bambach [:Jan]]

Attachment: Screenshot

Comment 2

[Jan Bambach [:Jan]]

Attachment: Screenshot 2

Resizing textbox, it's automatically scrolling the page. Page will be messed up. After selecting a piece of text some parts of it will appear again.

Comment 3

[Jan Bambach [:Jan]]

Attachment: Screenshot 3

Comment 4

[Jan Bambach [:Jan]]

Attachment: Screenshot 4

Comment 5

[Jan Bambach [:Jan]]

More, updated information: 

Reproducible: Always

How to reproduce:
The website will be not correctly displayed if...
1) ...the user is scrolling the page while another page in another tab is loading.
or
2) ...a script will make Firefox scroll.
or
3) ...resizing an element will cause Firefox to scroll the page up/down.

Comment 6

[Mathieu Marquer]

Dupe of Bug 580343 ?

Comment 7

[Daniel.S]

(In reply to comment #6)
> Dupe of Bug 580343 ?

Likely, haven't seen other reports like this since 580343 got fixed.