Visible crew/equipment: When one of the guards cries "Destroy it!" watch to the left of Karga and you'll see a crew member in jeans hiding behind a wall. This was later edited out on Disney+. (00:18:54)
Continuity mistake: In one shot (the one where the racist waitress slowly puts her hands on her hips), the sausage platter is turned differently than in the rest of the scene. The same mistake pops back later when father and son are confronted by the couple of white knights. (00:18:10)
Continuity mistake: Kate arrives in front of the newspaper. Directly behind her a guy a bit on the chubby side is arriving as well. But he already was in the crowd shown before, looking at the dummy. (00:11:40)
Continuity mistake: Ashley Barrett is first seen behind Homelander, but then in the next shot she immediately jumps in front of him. (00:19:32)
Visible crew/equipment: You can see the camera in the backseat as they pull into the gas station.