Revealing mistake: In the first scene at the beach, where Ali carries Stephanie to the water, you can see the shadow of her legs, despite her legs being amputated. (00:41:25)
Suggested correction: Can you? You can see his shadow for sure, but I don't see her shadow cast on anything. I was looking for this mistake on Prime - I added the timecode for the scene too (41:25) in case someone wants to check out and maybe submit a screenshot, too - but I personally can't see it.
Revealing mistake: In the scene where "More Than Words/Heaven" is sung, there is a montage of shots of Drew playing guitar on stage and Sherrie singing outside. One of the shots of Drew has been horizontally flipped - in it he's now playing guitar left-handed and his "The Bourbon Room" T-shirt has the logo back-to-front.
Revealing mistake: In the scene when Dodge is knocking at the second house to see if Olivia is home, check out the top left corner of the screen during the shot of Penny sitting in the car - a bird flies by inside the car. The only reasonable explanation is that the visual effects team not only made the bird graphic visible through the window but also in front of the rest of the car. They might have forgotten to bring the car layer in front of the bird layer, causing a bird to be seen flying over top of the entire image. (01:14:00)
Suggested correction: It's a reflection in the windshield.
Revealing mistake: When Sam first sets off in the canoe, it is obviously being towed because it leaves a moderate wake even though he is barely paddling.
Revealing mistake: In the final battle scene, when Edward does a flip around (and then breaks someone's head off), as he flips, you can see that the stunt double doing the flip looks totally different - taller, thinner, lankier, different face and hair.
Revealing mistake: Right at the end of the film when Sam, Patrick and Charlie are driving through the tunnel, when Charlie begins to stand up on the back of the truck, look slightly beneath his flapping jacket and you can see the safety wires attached to him.
Revealing mistake: Lazy prop department at work in the opening credits of this movie; look at the guest list. The second page and the first page are an exact copy and paste of the same names and addresses. (00:01:35)
Revealing mistake: When FDR jumps in the Beetle to help Lauren you can see it's a stunt making the jump - his hair is darker.