Scene with Sakamoto and Connors at restaurant meeting. Connors takes cigarette out of case before Sakamoto walks in. When she gets up to greet Sakamoto and then sits back down, she reaches for another cigarette. Then after they cut back to her, she already has it lit. But you never hear her lighter click.
When Jimmy is first checking out Walter's living room, and the TV is showing the news story about the prison strike, the announcer says "Let's talk to the Warden, Mr. Frank Toole, here at the Milton K. Prochek Correctional Facility". The announcer then starts out with, "Mr. Prochek..." and is never corrected by the Warden, or anyone else, even though the Warden's name is shown on his desk and his name tag as "Frank Toolman".
When Elizabeth Barnes calls Spencer/Jimmy at the mansion, Jewel tells him that Elizabeth is calling. He is splashing underwater when she tells him, and he tells Jewel to say that he's busy after coming up for air. When your head is underwater, and the water is splashing, you can't hear anything. Therefore, he couldn't possibly hear Jewel tell him who was calling.
Jimmy is in a prison at the beginning. There is a warden and they have prison jobs and it is a prison facility. However, the mistake is that they are wearing shirts with "County Jail" on the backs. A county jail is not a prison.