The license plates on the family Volvo are different on the front and back. The front license plate starts with a "4", the rear license plate starts with a "5".
The wind changes directions almost 180° when Chali first meets Aaron at the park. Shots from over her shoulder have her hair blowing back, away from her neck while the shots facing her have the wind blowing her hair forward across her neck/chin.
The writing on the chalkboard (especially the underlines) changes between shots when Aaron and Eliza visit Saul while he is teaching his class.
When Aaron goes to church, after the priest says "This is the Lamb of God...etc" Catholics should answer: "Lord, I am not worthy to receive you, but only say the word and I shall be healed". People in the church do not respond to the priest, but go directly to receive Communion, and it is very clear that the ceremony going on is Catholic.