Continuity mistake: Sabrina is in New York and she stays at Tuxedo Hotel; her room number is 325. However in a close shot of the key chain, it seems that she stays at another hotel (something like Zarac Hotel), while her room number is 1207. (00:20:30)
Wonder Woman vs Gargantua - S1-E7
Visible crew/equipment: When the truck carrying the caged gorilla pulls into the alleyway, just as Hans and Carl exit the truck and walk away, the blue-sleeved arm of the cameraman/crew member is visible as it moves upward, at the right side of the screen.
K is for Kill: The Tiger Awakes (1) - S2-E8
Visible crew/equipment: A Russian solder peers into a Salvation Army hall. In the shot that follows, from his point of view, there's a very obvious studio light on a tripod in shot.