Continuity mistake: From his fight against the imaginary Slade in the latter's old hideout, Robin sustains several injuries, including a partially swollen-shut right eye. During the last fight in the Tower's basement stairs, there is a (very brief) shot in which we can see 'Slade' leaping at Robin; in that instance, the right eye is fully open and appears not to be injured.
Bunny Raven or How to Make a Titananimal Disappear - S3-E11
Continuity mistake: Beast Boy is drawn onto the stage for a plate-juggling number. We see Mumbo balancing three plates (excluding Beast Boy) with his hands and left foot. But (again excluding Beast Boy), it's four plates getting smashed on the stage.
Revolution - S3-E7
Continuity mistake: When Mad Mod activates his hypno screens in the city, there is a man among the citizens with spiky black hair and a goatee, black-rimmed glasses and a horizontal blue stripe on his shirt. When he is first seen, he has both his arms hanging down, but in the second instance where he is seen, he has somehow acquired an ice cream cone (which loses a scoop) up to his mouth.
Chosen answer: It is located in California, as shown in "Teen Titans: Trouble in Tokyo". Possibly San Francisco as seen in the comics.
MasterOfAll