595531 - back button navigates back two pages instead of one

Status: UNCONFIRMED

(Firefox :: Toolbars and Customization, defect)

Description

[amazonmmc]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9 (.NET CLR 3.5.30729)

pressing the back button often sends me back two webpages instead of back to the page previously viewed. Previous page loads for a second, and then the page skips back one page further. Forward button works without a problem.

Reproducible: Sometimes

Steps to Reproduce:
1. unable to reproduce consistently -- have not noticed any pattern.
2.
3.


Expected Results:  
back button should navigate back one page at a time.

Comment 1

[ghidora]

I've seen this behavior in both 4.x and 5.0.x.  Facebook is a one site where this behavior is prevalent.  I have seen this on a few other sites as well, but it's very infrequent on those so I have not noted which sites they are.

Easily reproduced:
1: Log onto Facebook.
2: Navigate to ahead by clicking on any link that takes you to another page within Facebook site.
3: Press the back button and it will take you back to the previous page for about 1 second, then it will continue back to the page prior to that.  Sometimes, it happens so fast you cannot see the page it should be going back to.

Firefox Version: 5.0.1
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0.1) Gecko/20100101 Firefox/5.0.1