The blood on the suicide note changes positions multiple times including when Riley puts it in the fume hood and when Nick originally pulls it out of the dead guy's pocket.
When Ray checks Maddie for a fever, Ray's hand changes position in between shots on Maddie's face going from his hand being in a fist against her cheek to his fingers outstretched against her cheek.
When Maddie and Ray are talking on the bench, Maddie's hair changes positions in between shots.
After the suicide, the gun is shown with the hammer down. This type of weapon (Beretta 92 FS) will leave the hammer cocked after being fired.