When Jerry (Jerry Seinfeld) and George (Jason Alexander) are in the waiting room prior to their first NBC meeting, in the large shot you can see Jerry has one leg propped up on his thigh but in the next shot he has both his legs uncrossed.
Right after Newman accuses Kramer of reneging on the trade, the mug is in Jerry's right hand and no teabag tag is visible. In the next shot, the mug is in Jerry's left hand and the teabag tag is clearly visible as he places the mug down on the counter.
Just following the moment Kramer (Michael Richards) calls Newman (Wayne Knight) "Mojambo", you can see Jerry (Jerry Seinfeld) laughing and struggling keep a straight face.