Continuity mistake: When the captain is looking at his family picture, he's holding the blue file by a different side between shots. (00:04:05)
Continuity mistake: Washing Kai's wounds, CG tells him "I need to know more." Fresh blood trickles down her cheek, but has vanished in the following shot. (00:17:30)
Codladh Sámh - S1-E5
Continuity mistake: Kai hands the note to Mr. Young: the old man holds it between index and middle fingers, but with his thumb in the reverse shots. (00:39:45)
Fire Chicken - S1-E3
Continuity mistake: As the Triad goons pulls over their black van and kidnap the helper of Mr. Young, some passersby disappear between shots and others change position. (00:30:00)
Fire Chicken - S1-E3
Continuity mistake: Kai and Jenny put aprons on and start chatting. Behind Kai, a person is carrying a tray, then still has to pick that same tray up, disappears, reappears, etc. (00:13:10)
Continuity mistake: Kai tosses the rock fragment next to the dagger, but in the following shot the distance between the two has increased dramatically. (00:31:50)
Continuity mistake: When CG is done talking with Lu Xin at the diner, she grabs a glass and drinks from it. During this action, Lu Xin is eating a fry in the first shot, but in the second he's waiting on her with the left hand on his clenched fist. (00:26:20)
Continuity mistake: Agent CG is having her morning jog and there's a sizeable sweat spot on her top. That is, until she gets to the park for her scene with Mr. Master of disguise himself captain Fletcher: at that point her sweat stain reduces size considerably. (00:09:45)
Other mistake: After the initial flashback, the action is set at night - yet Kai's phone indicates 12:52 PM at home and then 1:53 (PM, in Lu's text message) at Uncle Six's. (00:05:20)
Factual error: Kai checks out his phone repeatedly and the date indicated is "Wed, Aug 22." Just a scene after, Jenny is shown with an August 2019 calendar in the background. August 22 2019 was a Thursday, not a Wednesday. (00:06:00)
Continuity mistake: Kai, in the kitchen, is putting the finishing touches to the dish, sprinkling it with peanuts. The peanuts bowl changes position and then disappears completely from the prep station between shots. (00:04:15)
Paths Pt. 2 - S1-E10
Plot hole: When Alec goes back in time to his family, there is no sign of his younger self before becoming a Wu Assassin.
Plot hole: The whole timeline of the episode is plagued with inconsistencies: the main timeline supposedly starts after 1 AM, but CG gets arrested for stealing a car in broad daylight. Unless the cops took her for a panoramic 4-5 hours ride of the bay before bringing her to the precinct, it does not add up.
Plot hole: CG is worried that if Kai phones her, he might blow her cover. Kai is no suspicious character and it's established that they know each other after the windshield errand. On the other hand, she engaged in a fight with several thugs and the very boss of the Triad who all have seen her, her cover should be pretty much blown already at that point. It's also quite funny how she made sure to meet with the Captain in secluded locations during long jogs, but then kept in her desk police files about the suspects! Some undercover cop.
Gu Assassins - S1-E6
Other mistake: The clock behind McCullough signals 5:10, and he wishes "Good morning" to Zan. It's way too early for the sun to be up. (00:42:40)