When Coriolanus Snow and Sejanus Plinth are eating before visiting the tributes in the zoo, Snow pockets one of three cookies from his plate. However, the number of cookies change with each clip.
When Lamina kills Marcus, his corpse should be spurting blood from the neck, as that's where she's just hit him with an ax. There should also be a huge puddle of blood on the floor when he falls.
Before Coriolanus is about to jump on the truck to meet up with Lucy Gray, he is seen hiding behind another truck. The camera then pans to the gate which has stationed guards on the same side that he is hiding, meaning the guards should be able to see him hiding in plain sight.
Soon after Coriolanus' head is shaved, the roots of Tom Blyth's natural brown hair are seen briefly.
When the rebels attack the arena and Marcus runs out, two people in what appear to be dressed in peacekeeper uniforms run out as after him and are subsequently shot.
Coriolanus shouts "Is it poisonous?" after being bitten by a snake. Being top of his class, he should know that snake bites can only be venomous, not poisonous.