gedit scroll handler disappears on 2nd tab

[Klaus Versl]

if I open a second tab and work with it in gedit,
the scroll handler vanishes as soon as I move the mouse pointer over it. I can't scroll the window's contents up and down by mouse.

Scroll handler: I mean the top-down arrow pair which appears when I move the mouse near the vertical orange bar at the right side of the window.

Ubuntu 11.04, gedit

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gedit 2.30.4-2ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Thu Jul 21 23:58:25 2011
ExecutablePath: /usr/bin/gedit
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gedit
UpgradeStatus: No upgrade log present (probably fresh install)