Until PHARO 9.0, I had no problem with XIM input on LINUX.
After a long time, I heard about PHARO 11 and tested it and it doesn't accept XIM input. I tested it and it doesn't accept XIM input on PHARO 10 either.
* ubuntu 22.04 * linux * fcitx xim * korean input
I'm using this combination, and I'm using pharo-launcher.