I attempted to put a pressure plate under my Rock Granulator so I could disconnect it from the power grid and run it off a battery, but only while a duplicant was standing on it.
However, despite the animation showing the Duplicant moving to the right side of the machine, the pressure plate in the "center" is being activated instead.
Simple Diagram: . This represents the floor under the Rock Granulator.
Expected Behavior: Duplicant is shown to stand on tile , so a pressure plate under there should trigger while they are working.
Actual Behavior: Tile  is triggered during work. In a closed work room with a door on the left, tiles 3 and 4 never trigger unless a duplicant is ordered to stand there.
I suspect this is a holdover from the pre-release, where Duplicants would stand on tile  in front of the Granulator and bash it until it worked.