These are 3 bugs that I've found, and I've listed them in order of the least to the most gameplay effecting.
These glitches I've acknowledged in the latest patch of the game. None of them make the game unbeatable, but they still can be rather annoying.
Bug 1: Mansion Door Fall Damage Glitch
If you walk into the doors of the Mansion in a specific way (I encountered this by walking into the Right Door), the game automatically triggers the event where you respawn from falling too far.
Bug 2: Mr. Peterson (The Neighbor) doesn't wake up on Night 4
I was wanting to play through the game again, and encountered a bug where Mr. Peterson was always asleep. He never got out of his bed, and I was even able to place a camera into the room without him waking up to try and catch me.
Bug 3: 2nd Security Camera Vanishes and is no longer obtainable.
When Patch #7 had released and added the Tool Rack and the crate for the 2nd Security Camera and Monitor, I used the 2nd Camera to keep watch on both floors of each building at once, then would hide in a place where I would still be able to use the Monitor. I encountered in Patch 8, after I discovered Bug 1 that when I respawned, the 2nd Camera disappeared from my inventory, but the game didn't respawn it in the "Wayron Croobs Nebnar" building.