weka.gui.GenericObjectEditor displays beyond the screen

[Honghe Wu]

Such as when I edit classifier property, the property edit displays too long to out of the screen within white space.
The picture is here,
https://docs.google.com/open?id=0B7KdjMOE0lgzSVJhYjJGWEhmYjg

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: weka 3.6.6-1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
Uname: Linux 3.2.0-24-generic-pae i686
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
Date: Mon May 7 16:12:00 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: weka
UpgradeStatus: Upgraded to precise on 2012-05-05 (1 days ago)