609850 - Clicking mouse’s back button in plugin causes crash of it and hang

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Karel Jára]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101104 Firefox/4.0b8pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101104 Firefox/4.0b8pre

I’m using Microsoft Comfort Optical Mouse 3000 and have the newest driver installed for it. I don’t know if this bug is hardware specific or can be observed with other mice as well.

The problem is that when I use the mouse’s back button while focused on a plugin, e.g., YouTube video (Flash player plugin) or any open PDF (Adobe Reader plugin), it actually hangs Firefox for about 20 seconds, then the plugin crashes and Firefox goes back one page.

Reproducible: Always

Steps to Reproduce:
1. Open YouTube video or some PDF inside Firefox
2. Click on the content of plugin to be focused on it
3. Use your mouse’s back button
Actual Results:  
Firefox hangs and doesn’t respond for a while, then plugin crashes and Firefox goes back a page

Expected Results:  
Firefox should normally go back one page immediately.

Comment 1

[Karel Jára]

I have also found bug 581681 which might be something similar but I don’t think I had ever noticed this problem I desribe here in 3.6.6 and later versions of Firefox before I started using nightlies of Firefox 4.

Comment 2

[Karel Jára]

Sorry for posting third one in a row but before this question even arises: I have up-to-date (stable versions) of Adobe Reader plugin as well as Flash player plugin.

Comment 3

[Jim Mathies [:jimm]]

(In reply to comment #1)
> I have also found bug 581681 which might be something similar but I don’t think
> I had ever noticed this problem I desribe here in 3.6.6 and later versions of
> Firefox before I started using nightlies of Firefox 4.

Is there any chance you could take 3.6 for a spin to confirm this?

Comment 4

[Jim Mathies [:jimm]]

Also, are there any crash reports posted to the crash server?

Comment 5

[Karel Jára]

Ooops. I actually can’t reproduce this in today’s build of Firefox 4 (Gecko/20101105 Firefox/4.0b8pre). I have neither installed nor uninstalled any extensions. It simply seems to work now. Strange.

Comment 6

[Jim Mathies [:jimm]]

(In reply to comment #5)
> Ooops. I actually can’t reproduce this in today’s build of Firefox 4
> (Gecko/20101105 Firefox/4.0b8pre). I have neither installed nor uninstalled any
> extensions. It simply seems to work now. Strange.

Thanks for checking. If you bump into it again, please re-open.

Comment 7

[Karel Jára]

I ran at it again. But only for Flash this time. It was when I got back from sleep mode. After restarting Firefox everything was OK. But I actually could not reproduce even when going to sleep again with Firefox running and then back from sleep. But it’s still somewhere there. I’ll watch for it, maybe I’ll get to know how to reproduce.