Partners in Danger Chapter 8: The Return of the Green Goblin - S4-E8
Audio problem: When Spider-Man is web-slinging at the end with Harry in tow, the sound of his web shooters is not in sync with the webs firing.
Partners in Danger Chapter 5: Partners - S4-E5
Audio problem: When Vulture asks Scorpion to turn the TV back on, his mouth isn't moving.