According to http://code.google.com/p/ibus/issues/detail?id=611#c6, this is resolved in ibus-chewing-20091211, which is available in Lucid (10.4). I can confirm that after installing ibus-chewing_1.2.0.20091211-1_i386.deb, libchewing3_0.3.2-2_i386.deb and libichewing3-data_0.3.2-2_i386.deb from Lucid the issue is resolved on a 32 bit Karmic installation.
According to http:// code.google. com/p/ibus/ issues/ detail? id=611# c6, this is resolved in ibus-chewing- 20091211, which is available in Lucid (10.4). I can confirm that after installing ibus-chewing_ 1.2.0.20091211- 1_i386. deb, libchewing3_ 0.3.2-2_ i386.deb and libichewing3- data_0. 3.2-2_i386. deb from Lucid the issue is resolved on a 32 bit Karmic installation.