Weirdest Glitch/Bug (Fnaf 1)

My friend was Playing my Fnaf 1 and it was a bit buggy. He could not pull down the camera so he was stuck like this until the power ran, then the weird stuff happend..... the "camera system and static", as my friend stated, stayed on the screen but the office was visible. Freddy's jingle played and 5 second later, Freddy appeared. You could hear a Jumpscare scream, but didn't see the jumpscare, similar to Bonnie's Bug.