525696 - Multiple windows when several tabs open

Status: RESOLVED INVALID

(Firefox :: Shell Integration, defect)

Description

[chris]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; da; rv:1.9.2b1) Gecko/20091029 Firefox/3.6b1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; da; rv:1.9.2b1) Gecko/20091029 Firefox/3.6b1

When opening another tab in Firefox it looks like I got two firefox windows open in the taskbar.

Reproducible: Always

Steps to Reproduce:
1. Open firefox
2. Open an extra tab
3. Look at the taskbar
Actual Results:  
For every extra tab I open it looks like I got an extra firefox window open

Expected Results:  
It should only show as one window and not two windows when there is only one window with several tabs

Default theme

about:buildconfig

Source

Built from http://hg.mozilla.org/releases/mozilla-1.9.2/rev/3b49c063bb42
Build platform
target
i686-pc-mingw32

Build tools
Compiler 	Version 	Compiler flags
cl 	14.00.50727.762 	-TC -nologo -W3 -Gy -Fdgenerated.pdb -DNDEBUG -DTRIMMED -Zi -UDEBUG -DNDEBUG -GL -wd4624 -wd4952 -O1
cl 	14.00.50727.762 	-GR- -TP -nologo -Zc:wchar_t- -W3 -Gy -Fdgenerated.pdb -DNDEBUG -DTRIMMED -Zi -UDEBUG -DNDEBUG -GL -wd4624 -wd4952 -O1

Configure arguments
--enable-application=browser --enable-update-channel=beta --enable-update-packaging --enable-jemalloc --enable-official-branding

Comment 1

[Henrik Skupin [:whimboo][⌚️UTC+1]]

Can you please attach a screenshot? Does it matter in which way you create a new tab?

Comment 2

[chris]

http://files.uploadffs.com/8/cdce8beb/ScreenShot001.png
and it does not matter how I create the tab. Tried CTRL+T, new tab button and open link in a new tab.

Comment 3

[Henrik Skupin [:whimboo][⌚️UTC+1]]

Rob, is that related to bug 474056?

Comment 4

[Rob Arnold [:robarnold]]

This is the result of bug 474056. It is a feature. You can disable it setting browser.taskbar.previews.enable = false in about:config

Comment 5

[Henrik Skupin [:whimboo][⌚️UTC+1]]

So this behavior is unique for each and every application on Windows 7 which has this feature enabled?

Comment 6

[Rob Arnold [:robarnold]]

I'm not sure what you mean by unique behavior. Applications have control over the number and appearance of the items in the taskbar in Windows 7. The only other application that I know of that takes advantage of this control this currently is Internet Explorer 8. By default you'll see one preview per window.

Comment 7

[Henrik Skupin [:whimboo][⌚️UTC+1]]

I have checked this with IE8 and it behaves exactly the same way. Opening another tabs will display a stack of windows in the taskbar. So is that invalid?

Comment 9

[Tyler Downer [He/Him]]

Not a bug, but this is the new features of firefox in windows 7. there is a bug on turning it off.