Partners in Danger Chapter 9: The Haunting of Mary Jane - S4-E9
Continuity mistake: Mary Jane's gloves come and go when she's talking to Spider-Man on the rooftop at the end of the episode.
Partners in Danger Chapter 9: The Haunting of Mary Jane - S4-E9
Continuity mistake: Mary Jane's costume's gloves come and go between shots in Miranda's hideout.
Partners in Danger Chapter 9: The Haunting of Mary Jane - S4-E9
Continuity mistake: Miranda's pants legs go from both being torn to just the left one then the right one during her flashback.

Partners in Danger Chapter 8: The Return of the Green Goblin - S4-E8
Continuity mistake: When the Green Goblin is first confronted by Spider-Man, he is riding his regular glider. Then after he pushes Spider-Man down onto the roof, one shot show him riding the larger glider.

Partners in Danger Chapter 6: The Awakening - S4-E6
Continuity mistake: When Morbius is battling Spider-Man and Black Cat on the rooftop, his red eyes are colored white in a couple of shots.

Partners in Danger Chapter 4: Return of Kraven - S4-E4
Continuity mistake: When Kraven is climbing the cage, it briefly changes color from silver to red.

Partners in Danger Chapter 5: Partners - S4-E5
Continuity mistake: When Smythe is discussing his plan with the Silvermanes, his yellow eyes are blue in one shot.