The Song of Gregory Williams Yates - S3-E13
Other mistake: Lindsay is video calling on Nellie's mom's phone to Yates. Bought at the scene of a fire, tells Finn to text Lindsay and let her know about the fire. We see the text come in, but it's on Nellie's mom's phone, not Erin's. (00:31:00)
Other mistake: When Voight finishes talking with Rev, Voight walks away. When he does, he goes in the opposite direction from where his car is parked and on the wrong side of car for a driver. (00:27:05)
Other mistake: Kim and Al chase the suspect into a wooded area. As Al is walking through the woods there is a puff of smoke from behind the the trees in front of him, but the suspect steps out from behind him.
The Thing About Heroes - S5-E2
Other mistake: Officer Burgess kicks in a door with a lock and deadbolt and does no damage to the door frame. (00:46:21)
Other mistake: Kim uses Gabriela Dawson to translate in Spanish to interview a witness. It could be a legal issue to use a native speaker, but it has been established in a few episodes that Kim is fluent in Spanish. (00:06:15)
Other mistake: Upton needs sugar and asks Attwater if he wants some. Despite the fact that he says yes, she heads to the vending machine and buys one candy bar.
Other mistake: S12 E2 Blood Bleeds Blue - Dante drives by the Green Line Morgan station stairs. It's the same stop Voight drives by as the stairs to the Green Line Kedzie station. The views are from a slightly different angle, but both station stops have a bike, a green scooter, the same weed growth, and a blue recycling bin in the same positions. (00:44:49 - 00:47:08)
Answer: Because he is a great cop and gets the job done better than anyone.