When Rocky is lying down on Barbie's bed after she has left to sit at the kitchen table, only the second and third buttons on Rocky's shirt are done up, his shirt not tucked into his pants. In the next shot when he is about to get up, the second, third and fourth buttons on the shirt are done up, the shirt still not tucked into his pants. In the next shot as Rocky is now off the bed, all but the top button on his shirt are done up, the front of his shirt now tucked into his pants.
At the musicians' meeting, Joe (the music venue booker) wears glasses in the long shot. His glasses come on and off in the close up when he talks with Rocky.
Angie opens the door to the Checker cab twice between shots.
During dinner at Anthony's apartment, Angie knocks over her water glass. A couple shots later it is full again.
When Rocky is in Barbie's apartment and is talking about the ugly dog, Barbie's body position is different in the shots at eye level (she is bent over) than at dog level (she is upright).
In the final street scene, as the long shot camera pulls away from the crowd, the street camera is clearly visible to the right of Wood and McQueen.