Audio problem: When Talbot comes upon the Hulk in his helicopter, the helicopter doesn't make a sound until it appears on screen.
Darkness and Light: Part 2 - S1-E12
Audio problem: When Betty tells Bruce that Hulk is on a rampage, Bruce says "It just never ends," but Betty's mouth is the one saying the line.
Darkness and Light: Part 1 - S1-E11
Audio problem: When Doc Samson is saying "I am delighted to be almost home," his mouth isn't moving for the first few words.
Audio problem: When the government employee is saying "You are hereby ordered to accompany me to Detroit," his mouth and jaw are completely motionless.
Audio problem: When General Ross is shaking hands with Doc Samson and saying "Welcome aboard. I'll see you at the team briefing in the base hangar, five minutes," his mouth is closed for the first 8 words.
Helping Hands, Iron Fist - S1-E4
Audio problem: When the S.H.I.E.L.D. helicopters land at Stark Industries, you can hear their rotors slow to a stop, but the animation still shows them to still be spinning.
Audio problem: When General Ross interrupts Gabe Jones by saying "Will be under my exclusive command," his mouth is not moving for the word "exclusive."
Helping Hands, Iron Fist - S1-E4
Audio problem: When Gabe Jones has his back to the camera and is telling Ross where on the map that Hulk was going, his jaw is not moving at all.
Audio problem: When General Ross is saying to Major Talbot "If Nick Fury thinks he can just..." his mouth isn't moving.
Audio problem: When Hulk is saying "Hulk smash! Hulk bash!", his teeth are clenched.
The Return of the Beast: Part 1 - S1-E1
Audio problem: When Rick answers the payphone, his mouth isn't moving when he says "Ed's Garage."
The Return of the Beast: Part 1 - S1-E1
Audio problem: When the soldier is telling Talbot what Banner is doing with the power station, the soldier's mouth and jaw areas are not moving when his back is towards the camera.
Answer: I believe it was mentioned in an issue of Wizard Magazine that the show was cancelled because of low ratings, and reportedly the show's creative shift in the second season had a part to play in the low ratings, as the changes alienated fans.
Phaneron ★