They didn't have a proper ending to the song. Not even live:
The Beatles I'm a loser
I had never noticed that before.
Just listened to the afternoon show from the same day and the ending is even worse!
On both versions Ringo seems to keep on playing when he is meant to have stopped.
But by the time they get to the shows in Rome a week later they have the ending correct. It stops at the end of the harmonica part before it goes into the nice guitar bit.
(I love the recordings of those Paris 1965 shows - the way the audience keeps singing the intro/outro bit "Can't Buy Me Love ... Love" even when Paul is singing something totally different in the chorus, and even during the guitar solo. And Paul's attempts at introducing songs in French. The audience seems to be having a great time, yet it isn't the wild screaming that The Beatles got everywhere else)