Before they board the plane it has three-rotor props, the next scene where the engine starts it shows a two-rotor prop.
Tubbs shoots out the back window of his car when they are hijacked by the lake. The window is back to normal when they join the group watching Trudi.
At 44:30 Rico (in a shot from the waist up) looks over the bridge, puts his finger to his mouth, then steps back to pace around. This footage then repeats in reverse (as also shown by how the woman winding the fishing rod suddenly reverses direction).
When Jimmy the pilot is shot and says "I'm alright", the late Glenn Frey's mouth is not moving. The line was clearly dubbed in later.