Inconsistent behaviour calling windows focus on another workspace

[Dario Ruellan]

Ubuntu 12.04.1 LTS;
Unity: 5.16.0
Compiz: 0.9.7.8;

Ubuntu 12.10
Unity 6.8.0
Compiz 0.9.8.4

What I expect:
Clicking on an open App on the launcher, app gains focus. If the app is on another workspace, Unity switches workspaces.

What I get:
The app gains focus, but the window is moved to the current workspace, sometimes on an off-screen position.

To reproduce:
- Switch to a second workspace.
- Open Empathy.
- Super+ctrl+arrow to put the window to the right
- Switch to the first workspace
- Click on the Empathy icon
The app window is moved offscreen or nothing happens (because Compiz thinks the app is in the current workspace).

Please note than when you Super+ctrl+arrow an application, part of the window (sometimes just a pixel) is placed offscreen, this seems enough to compiz to think the app is on another workspace.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

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[Dario Ruellan (druellan)]

In reply to the automated message: I was going to file the bug about Compiz package, but I'm not really sure and I didn't want to mislead. Apologies.

[Dario Ruellan (druellan)]

Another thing I noticed that perhaps is related: sometimes when you call for the "spread" desktop (super+w) one or all the windows got positioned off screen. This seems to happen when you have a window slightly off-screen on an adjacent desktop.
I'm still trying to find steps to reproduce it.

[Dario Ruellan (druellan)]

I can't reproduce this anymore on Compiz 0.9.7.9
I'm going to try reproduce it again later, and mark the bug as invalid if I can't.

[Dario Ruellan (druellan)]

Compiz 0.9.8.6 and I can reproduce it again. Not sure if this is a regression or I missed something on my previous tests. To reproduce:

  - Switch to the workspace on the right (ctrl+alt+right).
  - Open Emapthy
  - Dock Empathy to the right (super+ctrl+right)
  - Switch to the workspace on the left (ctrl+alt+left)
  - Click on the Empathy icon on the Launcher

Instead of a workspace switch, the app is misplaced on the current workspace.

[Dario Ruellan (druellan)]

I'm going to bring this to the Ninja team, to anyone who wants to help me troubleshoot this.

I bet the problem is related to Compiz's grid plugin. Seems to me that when you right-snap a window, the size of the window exceeds the size of the desktop by one or two pixels. Thats enough to wrap contents to another workspace and trick Unity to think the window is misplaced.

[Daniel van Vugt (vanvugt)]

Dario,

We have fixed two such bugs like you describe recently. The latest one is bug 1037164 so I will assume this is a duplicate of that at least.

[Dario Ruellan (druellan)]

Thanks Daniel, and yes, seems to be a duplicate of what I'm experiencing. Glad to see there are some fixes.