Father Frank, Full of Grace - S1-E12
Continuity mistake: When Steve gives Fiona the ticket to Miami he says it is out of O'Hare. When he goes to the airport he is at Midway.
God Bless Her Rotting Soul - S8-E3
Revealing mistake: If you look at Professor Youens' left foot when he is lying on the couch you will notice a chroma key error - half his foot is almost eaten by the carpet. (00:19:15)
Visible crew/equipment: After Fiona is hooking up with a guy from Tinder, as she is putting her clothes on and the camera is on the guy, you can see the guy recording in the mirror. (00:06:57)
Fuck Paying It Forward - S8-E4
Continuity mistake: Every time the camera comes back to Ian sitting down, the pill bottle and blue cup in front of him change position. (00:07:45 - 00:09:10)
Weirdo Gallagher Vortex - S9-E3
Continuity mistake: In the recap, Carl says "documentation community service", whereas in the episode before he says "documented community service". (00:00:20)
Crazy Love - S5-E6
Continuity mistake: Liam is carrying Frank's shoe in the scene after running away, but he does not find the shoe until he leaves the jockey in a later scene. (00:22:32 - 00:25:31)
Continuity mistake: Pepa is driving a red VW Golf IV series, while two episodes earlier a red III series was parked in the driveway.
Two at a Biker Bar, One in the Lake - S11-E7
Visible crew/equipment: Frank is confused as he's at a foreign bar. He backs up against a glass window. A few crew members are visible reflected.
Continuity mistake: Kev hands a beer with lots of foam at the top to a customer at the alibi, then the shot cuts to the beer having no foam, then back to the beer having foam again.
Continuity mistake: When he is handcuffed, Mickey mentioned his dad dumping them on Family Services for a year. However, in the third season Lip said Mandy had "miraculously" never been in the system.
Continuity mistake: A call comes through the police dispatch radio of a kid stealing from a liquor store and the address of the store is broadcasted as "44100 Western Ave", but when Carl and the lady cop enter the liquor store from the outside, the address above the store reads "2420."
Visible crew/equipment: Carl is walking along the reporters trying to get their attention. At the bottom of the screen is the shadow of the camera filming the shot. It moves as the scene moves. At one point there is even a boom mic shadow on the right. While this may be a member of the news crew, it's likely the boom mic for the show as the reporter has a mic of her own and the shadow follows Carl.
Revealing mistake: When the corpse of the old woman is laid on the bed, you can see her stomach contracting and expanding under the blanket.
Continuity mistake: The tattoo of Monica on Iam's shoulder has bobs on the back left side of his shoulder. Later in the same episode it shows the tattoo on the right side of his shoulder. (00:35:00 - 00:42:00)
Continuity mistake: The wall that Liam is building around Kev's kid changes during cuts. The most notable change involves the mud between the joints.
Face It, You're Gorgeous - S9-E6
Continuity mistake: When Antonio is showing Ian the prison layout on the table, he uses crayons. He starts with a purple crayon in his hand. He draws on the paper. When we see the drawing, it's red. The drawing changes again after that.
Continuity mistake: Lip leaves the house to go for a run after he can't find a clean coffee mug. In the sink are a lot of dirty dishes. Later in the episode Fiona comes home first and then Lip. Suddenly there are no dirty dishes. Nobody was home to do them.
Continuity mistake: When Debbie is in her room crying about Matty, Fiona comes to the door. Debbie gets up to open the door with nothing in her hands. As she returns to the bed, she's holding a pillow.
Fuck Paying It Forward - S8-E4
Continuity mistake: Fiona has a pack of camel cigarettes on the table as she's talking to Lip and Ian. The shot cuts to them and back to her. The pack has disappeared.