Continuity mistake: When Klaue is being rescued by Erik, the amount of blood from his face wound changes between shots.
Continuity mistake: Towards the end of the film: Killmonger is about to kill Shuri at the top of the mine shaft and Shuri is backing up. Her elbow goes over the edge, but in the next shot which is from over Killmonger's shoulder looking down at her, she is at least a foot away from the edge.
Continuity mistake: When M'Baku challenges T'Challa, the decorations near his neck are in a different position between him facing the crowd, and him turning to face T'Challa.
Continuity mistake: When Ross is interrogating Klaue, there's a shot from behind him and we can see the bug on his left shoulder. When he leaves the room and talks to T'Challa, the bug has vanished, but reappears again shortly afterwards.
Continuity mistake: While T'Challa is fighting in his first challenge, the sun changes between shots.
Continuity mistake: When Killmonger cuts a woman's throat, in one shot a spear is not red, but in the very next shot it is.
Answer: Well he's not literally an uncle to Killmonger, but rather he saw him as a surrogate uncle when he was a kid because he was always by his father's side.
Phaneron ★
And yes, he did know.
lionhead