Evolution dropdown menu for meeting does not work

When adding a meeting in evolution, there is a dropdown menu to select the time. This only contains a limited part of the day, and scrolling (using the new "pop-up scrollbar") does not work. (It is possible to type in the time directly into the box.)

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: evolution 2.32.2-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
Architecture: amd64
Date: Tue Aug 9 13:43:32 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: evolution
UpgradeStatus: Upgraded to natty on 2011-07-27 (12 days ago)