459003 - Clicking "History" in the menu often causes me to go Back instead of opening the menu

Status: RESOLVED DUPLICATE of bug 431397

(Firefox :: Bookmarks & History, defect)

Description

[Steve the Pocket]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0

At first I figured this was a PEBCAK and I was accidentally grabbing onto the "Back" item at the top of the menu so fast the menu would disappear right away, or maybe that there was a "feature" that double-clicking History jumps me back, and that my mouse was accidentally interpreting my click as a double sometimes. But then I started being extra careful to click it without moving the pointer, and it still happened occasionally. And intentionally double-clicking on it did nothing. So I have to assume it's just a really odd bug.

Reproducible: Sometimes

Steps to Reproduce:
Click "History," especially for the first time on a page.
Actual Results:  
Sometimes it opens the History menu, but other times it starts loading the previous page.

Expected Results:  
It should always just open the History menu.

Comment 1

[Ria Klaassen (not reading all bugmail)]

This seems basically a duplicate of bug 449879.
Does it also happen in safe-mode? An extension like History Submenus could trigger this.