Revealing mistake: When Chloe and Jack are in the car she is looking at the computer on her lap. The gear shift in the car is a automatic and it shows it being in park as they are driving. (01:20:10 - 01:20:55)
Episode #9.2 - S9-E2
Revealing mistake: Rose's newborn baby, Isabel, is suspiciously large and mature.
The Alchemy Murder Case File 1 - S1-E6
Revealing mistake: When Kindaichi shifts the stage screen Miyuki is holding, her fingers are not gripping the sides in the new position. Unless she is keeping it up sticking the back of it to her palms like Spider-man, it is impossible. She does hold it normally in all the other shots. (00:01:55)