Demonstrated:

Cell Unlocked During Lights Out

The position of the shower head in your cell allows you to walk straight out during lights out without a key. Recently discovered while making this map that it requires this specific wall set up for some reason. This only applies to your cell.

One Way Green Doors

Green double doors don't need a key to get through if you're moving down or left through them. These doors are also one way so you will get stuck if there's no other way out. Also you can freely walk out of this prison at anytime because double green doors make up the main gates.

No Green Keys

The guards never have green keys on custom maps so I doubt you'll find any if you try searching for them. The eastern garage will never be accessible via its green door.

Invincible Walls

Desks cause the wall space they're up against to become invincible. If you try to access the sealed stairwell, you will only be able to chip it on the side without a desk against it.

Hot Stairs

Going down the stairs to roll call triggers random guard heat. I speculate it to be because it's right up against the roof and thus the game momentarily thinks you're on the roof. At 80+ guard heat, you will hear the sniper take aim. This might be avoidable if you wear a disguise or traverse the stairs at night when the snipers aren't around, but I don't know for sure.

For reasons unknown, this bug seems to have ceased working as of the current version, but this does not mean it's been patched out by the devs.

Agent Robinson

This seems to happen on every custom map so it should happen here, but if you save, quit, and come back, one of the inmates will be randomly replaced with Robinson.

Tiny Camera Range

So it turns out while cameras can detect you standing on desks, fighting, or looting from up to 8 tiles away max, their effective range at detecting you damaging a wall is significantly shorter. I don't actually know if this is truly a bug or Team 17s intended idea of balance, but the south west garage has been set up with colored tiles to demonstrate this effect.

Medical Desk Lag

This one might be doable on any custom map, or any map at all, but there's a delay when trying to climb on medical desks specifically. Just keep holding the directional and you'll eventually get on, but it'll look like you're just pushing against it at first, unable to climb up.

Vent Paralysis

Turns out if you descend into a vent and said vent borders a wall with one side that's considered "outdoors" you will be unable to move. Going up into the vent is no problem. Entering the vent space from any other access point is fine. Just descending into a vent space that meets these conditions causes this problem.

Inconsistent Fence Invulnerability

Certain lengths or positions of fences are uncuttable, but it isn't always true. In the case of 1-block wide U formations, fences you approach from the top or bottom can be cut, but those you approach from the side, despite having similar dimensions, cannot. Multiple wall and fence formations are in the yard to test. Fences marked with dirt are uncuttable.

Job Officer No Clipping

Job officers will pass through unmarked doors without opening them. Previously demonstrated, but removed in current version.

Ghost Inmates

Inmates will sometimes just ignore terrain, clip through walls, and end up in places they shouldn't. Seems to happen if they're trying to get to roll call and something is slowing them down. In another instance, moving up and down stairs seems to cause prisoners to warp into places they can't get to normally.

In Bugton, this will occur because of the green door bug: prisoners can wander outside but can't get back in and this causes problems with pathing. However, this bug can occur even if there are no obstructions.


Not Demonstrated:

Wandering NPCs

NPCs that normally stay in a certain zone until needed will sometimes wander freely for no known reason. This includes dogs, riot guards, and doctors.

ADX Sandtrap: Wandering dogs and nurses.
Chakotay Island: Wandering riot guards (who favor the north side of the map for some reason.)
HMP Estherholm: Wandering dogs.

Note that the kennels can be zoned in such a way to allow dogs more freedom to wander on purpose, which is not this bug.

Vanishing Vents

Vents that pass over a stairwell are deleted. I saw this twice and I was unable to reproduce it.


Other

Purple Key

Purple double doors (and possibly single doors), when locked during lights out, may not be passable even with a purple key if the key is not in hotbar 1. Stumbled across this while testing a different map so details may be incorrect.