In Spider-Man 2 (2004) there are a number of scenes where Peter Parker exits and comes back as Spider-Man only after he **witnesses** something wrong (even if he is in the vicinity of the occurring crime).

Like, in the scene where Doctor Octavius' fusion reactor is about to explode. They make no mention of Spidey's Spider-Sense . 

And in the bank-job scene, Peter Parker is right there with Aunt May opening up a "super-saver account" and yet he does not "sense" that Doc Ock is about to pull a job.

So, I ask you... What is up with that ?