At the end of the final scene between Perry and Buzzie, Buzzie is holding the sugar dispenser in his hand just before the lady says they should leave. When she says her line, the shot changes, and Buzzie is no longer holding the sugar. When the shot returns to Buzzie, he is again holding the sugar.
In the climactic scene where Perry is talking to Buzzie, the height of the candle changes between shots, as does the amount of sugar in the dispenser.
After the first day of the trial is adjourned, Perry and Freddie are in a conference room discussing Freddie's bogus claim that he shot Goff. There is a policeman in the room, within earshot of the conversation, and he seems to be eavesdropping. This would violate attorney-client confidentiality.
In the two scenes where the guitarist is shown, his fingering doesn't come close to matching the music.
Most of the guitar music sounds like it's done with a 12-string guitar. But the guitarist at the end is supposedly playing a six-string guitar.
DA Burger and the coroner talk to each other saying bullets ricocheting off bone and bouncing around inside the body is a rare event. This is actually common; .22s are notorious for ricocheting off bone and turning organs into mush. More people are killed with .22s than any other caliber. Given the number of murders in Los Angeles, both an LA County DA and coroner would be very aware of all of this.