IBus 1.5.26 does not enable on Xorg sesson

I tested newly installed Ubuntu 22.04 LTS dev.

step to reproduce:
1. boot
2. select user
3. session changes to Ubuntu on Xorg from Ubuntu
4. enter password
5. run gedit
6. put Hankaku/Zenkaku key
7. nothing to happen

consideration：
Run "ps ax |grep ibus" on terminal:
$ ps ax |grep ibus
   5774 ? Ss 0:00 sh -c /usr/bin/ibus-daemon --panel disable $([[ $XDG_SESSION_TYPE == "x11" ]] && echo "--xim")
   5779 ? Sl 0:00 /usr/bin/ibus-daemon --panel disable
   5863 ? Sl 0:00 /usr/libexec/ibus-dconf
   5864 ? Sl 0:00 /usr/libexec/ibus-extension-gtk3
   5868 ? Sl 0:00 /usr/libexec/ibus-portal
   5965 ? Sl 0:00 /usr/lib/ibus-mozc/ibus-engine-mozc --ibus
   6831 pts/1 R+ 0:00 grep --color=auto ibus
It is strange.

IBus 1.5.25 introduces systemd user unit files.
/usr/lib/systemd/user/org.freedesktop.IBus.session.GNOME.service
/usr/lib/systemd/user/org.freedesktop.IBus.session.generic.service
above contains "ExecStart=sh -c '/usr/bin/ibus-daemon --panel disable $([[ $XDG_SESSION_TYPE == "x11" ]] && echo "--xim")"
https://github.com/ibus/ibus/blob/master/bus/services/org.freedesktop.IBus.session.GNOME.service.in#L21
It may be bashism.
I changed to "ExecStart=bash -c '/usr/bin/ibus-daemon --panel disable $([[ $XDG_SESSION_TYPE == "x11" ]] && echo "--xim")" and reboot then works as expected.