A pressure plate on a slab will not open a trapdoor, but will close an open one. Doors work as expected, pressure plate on a slab will open them. wood and stone pressure plates act the same, and all types of slabs the same.
What I expected to happen was...:
I thought that a pressure plate on a slab would open the trap door
What actually happened was...:
the trap door did not open
Steps to Reproduce:
1. put down a slab level with the top of a block
2. place a pressure plate on the slab
3. place a trap door on the same level, on the slab or appropriate block
4. walk on to the pressure plate
5. an open trapdoor will close, a closed one will do nothing.
Linked issues
is duplicated by 21
relates to 4
MC-114965
Placed tripwire hook updates blocks around opposite facing tripwire hook on same axis
Resolved
MC-7344
Trapdoor is closed when redstone repeater is one block below and powered.
Resolved
MC-76111
Doors behave inconsistently when receiving updates
Resolved
MC-84173
Trapdoors get a redstone update when being pushed/pulled next to a power source, but not when being pushed/pulled away from it
Resolved
Comments 14
Since the top-slab is not a whole block, I would think it shouldn't transmit redstone signal at all. So, what I would expect to happen would be that the trap door doesn't move at all.
I think the bug here is that an open one is closing.
I just did some tests with other "block updates", since in a certain way it does make sense that a (trap)door which has been put into a "bad" state by a player would change to the "right" state when receiving a block update.
There are some inconsistencies. When I open an unpowered (trap)door (so by a player) it will close again if there is a redstone block update, but not if there are other block updates like placing/removing a block. But when it is the other way around, so when I close a powered (trap)door it will open again with any block update.
I just tested it: Upper slab, pressure plate on top, trap door next to the pressure plate, open trap door manually, step on pressure plate, step off pressure plate. Result: Trap door closes.
The case in the screenshots does indeed not apply anymore, can someone remove them, please?
@unknown What do you mean with three reports in one?
Can confirm.