Other mistake: Near the end of the episode, Liv Tyler gets into a bathtub and takes off her clothes. We see an overhead shot of the tub and it's clear she is wearing a darker colored top.
Visible crew/equipment: The camera crew and camera can be seen in the far left user box during the virtual meeting on the laptop. (00:16:00)
Factual error: A character administers an EpiPen upside down and without removing the blue cap. (00:32:00)
Continuity mistake: When TK is trying to break the ice above the boy, in one angle, the ice is moving. From then on, it is solid again.
Prince Albert in a Can - S3-E11
Visible crew/equipment: When the crew is searching the meth house, the camera shows a table full of it and the shot moves upward toward the crew. A significant camera shadow becomes visible on the wall.
In Sickness and in Health - S4-E18
Revealing mistake: The baby is obviously a mannequin or doll when it's underwater.
Other mistake: The boy stuck in the train car has a very cracked screen on his phone, but when we see video from the phone from his brother's side, the picture from the camera is immaculate.