xfce4-terminal frequently crashes when ibus is enabled

[PyGeek03]

When I enabled ibus as the default input method, xfce4-terminal frequently crashes when I open it. I'm using Xubuntu 16.04 LTS, installed using the package xubuntu-core. The specific method that I used to enabled ibus is by modifying a few lines in a config file. However, as it's been more than a month and I have moved on to fcitx since then (fcitx worked fine with xfce4-terminal, btw), I don't remember the specific config file. I only remember that when I uninstalled ibus, if I opened xfce4-terminal, the terminal kept notifying me that
"The program 'ibus' is currently not installed. You can install it by typing:
sudo apt install ibus".
These 2 lines are printed before the line consists of my username and computer's name. It only stopped notifying that after I have reverted the changes in the config file.