Image lost if changes are not saved manually before restart

[Ader]

If I create a new image in Gimp, and then choose to restart Ubuntu without saving this image manually, it is lost. In Windows, the OS refuses to restart before you have chosen whether or not to save changes. Should something like that exist in Ubunttu as well?

Writer and Calc are other programs where you do not get the option of saving, but these programs display the last opened file correctly after the reboot.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gimp 2.8.10-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Sat May 10 13:23:25 2014
InstallationDate: Installed on 2014-04-20 (19 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: gimp
UpgradeStatus: No upgrade log present (probably fresh install)