Keyboard shortcut for flag/unflag does not work in fullscreen mode

In the thumbnail view I can flag/unflag pictures with Ctrl-G or rightclick->flag/unflag. In the full-screen view a flag is shown in the top right corner if the picture is flagged. Using rightclick->flag/unflag does work in the full-screen view, but Ctrl-G doesn't work.

What happens if I press Ctrl-G in the fullscreen mode:
 The flag in the top-right button appears and directly disappears

What should happen:
 The flag should appear (or disappear if the image was already flagged)

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: shotwell 0.14.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-28.41-generic 3.8.13.5
Uname: Linux 3.8.0-28-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
Date: Thu Aug 8 20:00:19 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-02-16 (904 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MarkForUpload: True
SourcePackage: shotwell
UpgradeStatus: Upgraded to raring on 2013-04-26 (104 days ago)