You know how it is. You are listening to one of your favorite songs on the radio (if radio still plays them) and you are hoping that they will let it play to the end, and not cut the ending short, like they sometimes like to do. Here is a list of songs with tricky endings, along with what makes those endings "tricky." The song isn't over until (and unless) you have heard that ending:
Supertramp, "Take the Long Way Home," the repeated "long way home"s at the end. Radio always seemed to fade them early

Three Dog Night, "Mama Told Me Not to Come," that very last note which is isolated from all the rest
Derek & the Dominoes, "Layla," it ain't over 'til you hear that bird chirp at the very end!
ELO, "Don't Bring Me Down," it has that "clicking noise" at the very end of it
Teena Marie, "Lovergirl," it fades down during that rap at the very end, so we hardly ever get to hear all of it.
I don't know if it is possible that single edits or radio edits eliminated some of these endings, but they didn't always get played in full on radio back when they were hits.