Can not use ibus or fcitx in sawfish

I use sawfish-1.9.1 in a gentoo linux, and I want to input chinese in my  daily works, so I install ibus and ibus-pinyin.  It works in gnome but i  did not work in sawfish (can not display words select panel). Firstly I think it's ibus' issue and install  fcitx instead, but again it can work in gnome but can not work in  sawfish.  I think it‘s sawfish's problem and want to file a bug in  bugzilla.gnome.org. But i can't assign an account, so i send mail to  this address. Hope somebody can give me a help, Thanks.