Comment 9 for bug 1738500

I just found a temporary work around:

1: start "ibus-setup" as a normal user in a terminal

2: chose "Emoji" tab

3: click the button "..." at "Keyboard Shortcuts Emoji Choice"

4: push "delete" among the "add/apply/delete" buttons

This is a very windows-ish solution, i.e. it can not be a part of an "after intallation" script, since I don't know how to do it from terminal by issueing a command.