I write this question intrigued by this topic.
The best and accepted answer states that "functioning relationship" means "a relationship that is working properly".
I did some research. The English corpus clearly shows that using "functioning" as an adjective is acceptable. But it is seldom used in the phrase "functioning relationship", and more often used, understandably, in phrases "functioning machine", "functioning computer"...
Anyway to get to the point, can someone explain to me why/how "functioning relationship" means "a relationship that is wroking properly", and not "a relationship that is causing function" - which would be a logical conclusion of its meaning by observing other participial adjectives (boring homework, annoying noise, thrilling experience)
(Not a duplicate because in the other topic my question is not explained. It is just stated as a fact "2+3=5".)