IBus installs a desktop file for the ibus-setup GUI to easily modify its settings (see here). This is very useful because you either have to use the command-line or dig through the system settings to find what you want. However, it doesn't appear in the application menu. I can't really take a screenshot of it because the menu disappears if I click my mouse. However, if you have ibus installed, typing IBus Preferences should show you an application, but there's nothing there.

After some fiddling around, I found that this line is causing the issue. Is it okay to remove this line?