I know that this may be a bit of a gap, but it’s a general problem of our society nowadays: Admitting a mistake is unpopular and can be used by others to say “See: even you acknowledged that you were wrong there.”, so people only rarely do it. (Especially politicians, stars and corporations/corporate representatives.)
To be very pendantic, it’s the other way around: The wording as very precise at describing both spells, but quite vague at describing their interaction. That’s what leads to the problem.