Showing on screen keyboard before screenshot will lock dialog

[Georg]

Platform: VirtualBox 4.0.12 r72916 on Ubuntu 10.04 2.6.38-11 generic
Live CD: oneiric-desktop-i386.iso (Beta 1 20110830)

Steps to reproduce:
1) Start machine with live CD mounted
2) Wait for Ubiquity to show
3) Click on the accessibility menu in the top right corner
Note: The menu item is cropped, but still possible to select. See bug #837287
4) Select "On-screen Keyboard"
5) Close on-screen keyboard
6) Press "Print Screen" to get a screen shot
7) Press "Cancel" or click the close icon in the top left corner

Expected result:
- The print screen dialog disappears

Actual Result:
- The print screen dialog is impossible to close
Note: The print screen dialog sometimes gets hidden behind the ubiquity main dialog, but it is still not closed

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: ubiquity 2.7.20
ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
Architecture: i386
CasperVersion: 1.280
Date: Tue Aug 30 11:11:06 2011
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110830)
ProcEnviron:
 PATH=(custom, no user)
 LANG=da_DK.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[dino99 (9d9)]

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