Continuity mistake: Miguel kicks and breaks a staircase railing during the school brawl. For a second it cuts to Robby. When it cuts back to Miguel, the railing is fixed.
December 19 - S3-E10
Continuity mistake: At one point during the first meeting of Vanessa and Ali, Vanessa is using a straw to play around with her martini glass. In the next shot, the straw disappears.
Strike First - S1-E2
Continuity mistake: During the pool party where Sam is hanging out with Yasmine and Moon, Yasmine holds her cup high in one shot but then low in the next.
Continuity mistake: During the school brawl, Miguel tries to stop Tory from further hurting Sam but Tory kicks him aside. Tory's jacket comes off her left shoulder. It then cuts to Miguel and when it cuts back to Tory, her jacket has come off both shoulders.
Answer: Both.