GLib-GIO-CRITICAL **: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed

I'm getting the following error whenever I start GTK related programs, like meld, firefox etc:

GLib-GIO-CRITICAL **: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed

All search hits suggests that it is fcitx-module-dbus' problem, and removing it will solve the problem. However, I do want to keep fcitx-module-dbus. Any other alternatives?

I asked in a developer group and they suggest to upgrade to fcitx5 instead, but so far I can only find fcitx-module-dbus in 21.10 impish's repo, but it does has fcitx5.

Can fcitx5-module-dbus be packed and available in 21.10 impish please?

$ date; meld
Sat Nov 6 17:46:39 EDT 2021
2021-11-06 17:47:05,368 CRITICAL Gtk:
(org.gnome.meld:26756): GLib-GIO-CRITICAL **: 17:47:05.368: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
2021-11-06 17:47:05,368 CRITICAL Gtk:
(org.gnome.meld:26756): GLib-GIO-CRITICAL **: 17:47:05.368: g_dbus_proxy_new: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
. . .

Basically it is causing every GTK related programs, like meld, firefox etc, to have an extended delay in starting.

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 21.10
Release: 21.10
Codename: impish

$ sudo apt list fcitx* | grep installed
fcitx-bin/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-config-common/impish,impish,now 0.4.10-3 all [installed,automatic]
fcitx-config-gtk/impish,now 0.4.10-3 amd64 [installed,automatic]
fcitx-data/impish,impish,now 1:4.2.9.8-3 all [installed,automatic]
fcitx-frontend-all/impish,impish,now 1:4.2.9.8-3 all [installed,automatic]
fcitx-frontend-gtk2/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-frontend-gtk3/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-frontend-qt5/impish,now 1.2.5-1ubuntu2 amd64 [installed,automatic]
fcitx-module-dbus/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-module-kimpanel/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-module-lua/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-module-x11/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-modules/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx-ui-classic/impish,now 1:4.2.9.8-3 amd64 [installed,automatic]
fcitx5-module-quickphrase-editor/impish,now 1.2.5-1ubuntu2 amd64 [installed,automatic]
fcitx/impish,impish,now 1:4.2.9.8-3 all [installed,automatic]

And I've just reinstalled them all.