gksu's password entry is not with password mode

Binary package hint: gksu

when ibus in Chinese PinYin mode, and gksu ask for a password, the password entry is still in PinYin mode,just like the fellow image.

When web pages in firefox ask for passwords, the ibus is not activty

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: gksu 2.0.2-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-15.21-generic 2.6.35.1
Uname: Linux 2.6.35-15-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Thu Aug 19 21:38:59 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100812)
ProcEnviron:
 LANGUAGE=zh_CN:zh
 PATH=(custom, user)
 LANG=zh_CN.utf8
 SHELL=/bin/bash
SourcePackage: gksu