Eclipse's new scroll bars don't show up

Binary package hint: eclipse

The new scroll bar replacements that Natty and Unity is doing for many apps, the scroll handle does not show up. You the orange scroll location bar shows up and you can scroll with the middle mouse button only.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: eclipse 3.5.2-8ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-9.43-generic 2.6.38.4
Uname: Linux 2.6.38-9-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Tue May 3 15:22:32 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: eclipse
UpgradeStatus: No upgrade log present (probably fresh install)
xulrunner-versions: /usr/lib/xulrunner-1.9.2.17