Continuity mistake: When Billy says, "I'll try another one," in the side shot he selects a card and turns it to face Agatha, pinching it at the bottom. We cut to a front shot, and he's holding it by the sides with his fingers and thumb. (00:06:05)
Deliberate mistake: Throughout the episode, all the police station clocks are still and show the same time (3:33) in different scenes. (00:18:55)
Continuity mistake: When Agatha is talking to Herbert at the police line, the position of her arms varies over several shots.
Revealing mistake: When Agatha's apparent nemesis makes her grand entrance, blasting the front door open, the powerless witch gets thrown against the closet door. The face of Kathryn Hahn's stunt double is fully visible before the camera cuts away to show the fall. (00:30:45)
Continuity mistake: During the interrogation scene, the folder and the notepad are positioned differently depending on the camera angle. (00:20:00)
Continuity mistake: When agent Vidal asks Agnes, "Where have you traveled?", Kathryn Hahn's hand is suddenly in a different position in close-up. (00:16:00)
Continuity mistake: At the beginning of the scene when Agnes and her ex are drinking beer in the living room, Aubrey Plaza's hands awkwardly shift position in the transitions between shots as she swallows after Agnes' TikTok anecdote. (00:15:30)
Continuity mistake: In the scene with Norm the jeweller appraising the locket, depending on the camera angle he holds it in his right hand or with both hands. Then, before the scene wraps up, he makes the 200 $ offer with folded arms, but listens to Agnes' reply with open arms. (00:11:35)
Continuity mistake: Agnes forces Dottie to cooperate by threatening to disturb the quiet of the library. Just before she starts shouting, she puts the card down directly on the desk. However, in the next shot, the card is atop a book. (00:06:05)
Continuity mistake: Agatha crouches by the freshly rolled-over corpse, does not touch it, but when the camera pans up and away as she walks off, it changes position (for instance, their arm moved to the opposite side of the "1" tag). (00:03:50 - 00:04:40)
Continuity mistake: In the woods, Agatha picks her locket up from a puddle. Herb calls her because they are going to roll the body over. Look at her ponytail as she turns around; in close-up, it suddenly gets over the coat's collar. (00:03:30)
Circle Sewn With Fate / Unlock Thy Hidden Gate - S1-E2
Continuity mistake: When the Teen pulls out the card with Agatha's address and puts it on Lilia's dinner table, Lilia's roster list changes position in Agatha's hand. (00:14:40)
Circle Sewn With Fate / Unlock Thy Hidden Gate - S1-E2
Continuity mistake: Agatha leaves Lilia Calderu with her list, turning around, tossing her shawl over her shoulder in a flippant fashion. As the shot changes, you can see Kathryn Hahn walk towards the camera with her shoulder uncovered. (00:14:45)
Circle Sewn With Fate / Unlock Thy Hidden Gate - S1-E2
Plot hole: Spoiler - considering what emerges at the ending of the series, Agatha's behaviour in this episode hardly makes sense. She had no trust in the Witches' road; in fact, she knew it did not exist at all, and her only aim was to steal the powers of the other four witches during a fake ritual. However, one of them is a normal human with no powers, one is a witch with her powers sealed and thus impossible to steal, and she literally tells the third one how her very specific energy-stealing power works - which, of course, is entirely absurd considering she had no purpose for her, given the lack of a real ritual.
Suggested correction: She made do with what she could find. Two of the witches had powers she could steal. Since she was totally powerless at that time, it would be enough for her. After taking the power of just one or two, she could have killed the others just as easily. It didn't matter to her that one of them was not a witch at all; she needed four to make them believe they were walking the witches' road.
"I can't steal your magic unless you blast me with it. So if you show a little self-restraint, which, let's be honest, you're gonna need to, all that power is yours to keep." This is not me paraphrasing her for humour or to be concise; it's the actual dialogue to the person she plans to rob of their power. And it is 100% accurate; there is no "spark" she can steal without being hit directly. This level of candour makes sense only if there is an actual point to the ritual, and her subsequent attempt at taunting them is desperation because the ritual does not work, so then, at that point, she has to make do with what she has. Not if the whole thing was a sham to begin with.
I agree it's strange she would warn her about her ability if she planned to have them attack her, but Alice did in fact use her powers on her later without thinking about those consequences. So maybe Agatha hoped she would forget or not show restraint once she angered them enough. The witches in the past all seemed very eager to attack her after being taunted, and seemed to have been working for her for centuries too, so why not now?
Continuity mistake: At the beginning of the library scene, Agatha/Agnes shows the borrowing card to the clerk. This piece of evidence changes position repeatedly between shots. (00:05:40)