Video Other mistake: As the surviving characters discuss the fate of Westeros, 2 plastic water bottles can be seen tucked behind the chairs they're sitting on.
Video The Last Of The Starks - S8-E4
Other mistake: During the scene in the banquet hall, as Tormund says "most people get bloody murdered, they stay that way", look at Daenerys in the background - a disposable coffee cup is on the table in front of her. This brown cup with a white plastic lid is nothing remotely like the style of cups they're all drinking from in the scene. HBO acknowledged the slip up and digitally edited it out on streaming services, reruns and future DVD releases.
The Last Of The Starks - S8-E4
Other mistake: The dragon is shot down by three giant arrows, and everyone looks shocked, with no idea where the attack came from, even Daenerys, who's flying high alongside it. Then the enemy fleet rounds a small outcrop, revealing themselves as the attackers, but given her height she would have seen them a mile off and steered well clear.
Other mistake: The faith militant attacks Gregor Clegane. Gregor chokes him. You will see that before the faith militant drops his weapon with his left hand, both of his hands are already holding Gregor's massive arm. (00:13:05)
Other mistake: When Ned is about to behead the Night's Watch deserter, the deserter whispers, "Forgive me, Lord..." No major religion in Westeros refers to their deity or deities as 'Lord'.
Suggested correction: But Ned is a Lord. His Lord even. He asks Ned for forgiveness.
