Stone Pressure plate does not activate at all. It behaves like the new item Carpet (meaning it does nothing.)
wooden pressure plate will activate correctly.
Environment
Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130318-1533)
BIOS: BIOS Date: 11/16/10 18:05:45 Ver: 08.00.15
Processor: Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz (8 CPUs), ~3.1GHz
Memory: 12288MB RAM
JAVA 7 update 21
Duplicate of MC-13610, please use the search function to see if your bug has already been submitted. Currently over 54% of tickets are being closed as duplicate.