Unity Launcher window spread stops working randomly

[Rishi Gadhok]

Very often, if multiple windows for an application are open, in unity, clicking on the launcher icon does not display the window "spread". Only the last used window is brought to the fore.
All these windows are in the same workspace.

Also, some icons of open programs just did not display in the unity launcher. They appeared after quite some time.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.10.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,resize,move,vpswitch,grid,gnomecompat,mousepoll,place,shift,imgpng,regex,wall,unitymtgrabhandles,session,animation,wobbly,fade,expo,ezoom,workarounds,scale,unityshell]
Date: Thu Apr 26 10:10:04 2012
InstallationMedia: This
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-03-18 (38 days ago)

[Sebastien Bacher (seb128)]

Thank you for your bug report, do you use unity3d or unity2d? Do you have steps to trigger the issue? Could you take a screenshot showing the bug?

[Rishi Gadhok (rishigadhok)]

I was using unity 3d. I do not have repeatable steps yet. But I will report it here the next time it happens. Same with the screenshots.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[GonzO (gonzo)]

I only had this with 5.12 - the spread *never* worked with that release (that I got from proposed). Removing "proposed" and reverting to 5.10 makes the spread work again.

[Andres Barbaro (afbarbaro)]

I confirm I have the same problem with unity 5.12. This used to work perfectly in 5.10.

[Sheldor (tobias-e-gmx)]

I have this problem only when i reduce the Desktop size (number of workspaces) in Compiz Settings (Under "General Options", "Desktop Size" Tab) to only 1 (1 vertical and 1 horizontal). With two or more workspaces the window spread works. as it should. Hope this helps to solve the bug.

[Heineken (lars-heineken)]

Button shortcuts (SUPER-W) do work though.

[Arnaud Abélard (arnaud-abelard)]

I confirm Sheldor's assertion: the bug will immediately occur when you reduce the number of desktop to one. Setting the number of desktops to two and above will resolve the problem and Spread will work as espected.

[Daniel van Vugt (vanvugt)]

Rishi: I believe this is bug 955035.

Arnaud: You are describing bug 996604.