Integration with Virtualbox, switching windows is problematic

[mydoghasworms]

When using a VirtualBox guest in full screen, and wanting to switch back to my desktop, I hit right-Ctrl to give control of mouse and keyboard back to the host. But when I then Alt-Tab, the switcher is not visible.
Also, same thing when I minimize the VirtualBox guest: I see the VirtualBox window being minimized, only to pop up a second later, although that window is not in focus (I see the host mouse cursor), because hitting Alt-Tab once brings up the window again (though with absence of the switcher).
The latter is especially confusing and frustrating.
For a reference of how the integration works smoothly, it is worth going back to older releases of Ubuntu running Gnome (i.e. prior to Unity running Gnome 2, I have not tried it with 3). There the integration is smooth as butter.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 7.0.0daily13.04.18~13.04-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Wed May 8 07:29:44 2013
InstallationDate: Installed on 2013-05-03 (4 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[mydoghasworms (dumace)]

Sometimes also, for no reason, while Alt-Tabbing in the guest, the host takes control and without knowing it, I switch to another window on the host.

[Christopher Townsend (townsend)]

Hi,

There are really three bugs in this bug.

1. No Alt-Tab Switcher when viewing a full screen window. This is bug #1177917.
2. After minimizing the full screen window, it is shown again after the minimization. This is bug #1053895.
3. Host taking control of Alt-Tab from the client. Can't say what bug this may be.

I'm inclined to dup this bug to bug #1177917 since that is what the bug title is really describing. I think you may want to enter a new bug for the issue you see in comment #2.