In the very first release, pressing the "=" key allowed players to instantly skip a night. This was removed in a hotfix just 15 minutes later.
Occasionally, Nightmare Bonnie or Nightmare Chica can jumpscare the player even after the clock hits 6 AM if their attack animation was triggered at the exact same millisecond as the night's end. Five Nights at Freddy's 4 баги
A bug once allowed players to unlock the hardest mode instantly by pressing "2" and "0" at the same time in the menu. In the very first release, pressing the "="
On Night 5 or during the 20/20/20/20 challenge, animatronics like Nightmare Bonnie and Nightmare Chica are supposed to be "force-teleported" away when Nightmare Fredbear or Nightmare arrive. However, a known bug can cause players to still die to the original animatronics shortly after 4 AM if the "swap" doesn't execute perfectly. A bug once allowed players to unlock the
This is the most notorious bug in the PC version. Because FNaF 4 essentially consists of a massive collection of high-resolution "GIFs," the game can hit a 2GB memory limit. This often triggers when Nightmare Foxy enters the closet; the screen may turn permanently black at certain doors or when checking the closet, as the game fails to load further textures.