615370 - When I view any type of Flash on any website, when scrolling past it a white box appears at the top of the browser.

Status: RESOLVED DUPLICATE of bug 590568

(Firefox :: General, defect)

Description

[amitc97]

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

This problem occurs with any Flash on any website. When I scroll past the Flash (up or down), a white box appears at the top. It's just a white rectangle shaded in. The only way to remove it is to click randomly, move the cursor around it, open/close tabs in the area, etc.

Reproducible: Always

Steps to Reproduce:
1. Go to a website using Flash, such as http://www.youtube.com/
2. Click on a video so the Flash appears on the page.
3. Scroll down past the video, and then back up.
Actual Results:  
The white block I mentioned earlier appeared again.

Expected Results:  
The software should have not caused a white block to appear when scrolling past the Flash.

I am using the Firefox 4.0b7 Beta, and this problem does not happen with the latest stable version of Firefox 3. Restarting the browser, and the computer, did not help the situation: the white box appears regardless, every time.