612489 - Rows of repeating icons displayed in toolbar area if ff4b7 opened after ff3.6

Status: UNCONFIRMED

(Firefox :: Toolbars and Customization, defect)

Description

[Glenn Gervais]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7) Gecko/20100101 Firefox/4.0b7
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7) Gecko/20100101 Firefox/4.0b7

If I open Firefox 3.6, then close it and open Firefox 4 beta 7, I get 4 rows of repeating icons appearing from the very top of the toolbar area and extending down to the browser view window. The icons are layered over the tabs, text, and buttons. If I close Firefox 4 and then open it again after the problem occurs, the problem is gone. 

The icons are round navigation icons, about 24px x 24px. There are 15 in each row and they include back, forward, close, refresh, home, and more.

Reproducible: Always

Steps to Reproduce:
1. Open Firefox 3.6
2. Close Firefox 3.6
3. Open Firefox 4 Beta 7
Actual Results:  
Open Firefox 3.6, then close it and open Firefox 4 beta 7

Expected Results:  
Received 4 rows of 15 small nav icons in the upper right corner of the toolbar area. 

Icons should not have appeared.

Comment 1

[Maniac Vlad Florin (:vladmaniac)]

I do not think having two instances of Firefox, namely 3.6 and 4b7, is something recommended. juanb, what do you think?