What I thinked what happends:
Cobblestone-Slabs have got a Name in the statistics
What was happening:
Cobblestone-Slabs have the name "tile.stoneSlab.name" there.
Steps to Reproduce:
1. Place a Stone-Slab
2. Search for this block in "Statistics"
Info: Also happens without a Resource-Packet
Environment
.Windows 7 Ultimate 64-bit, Intel Pentium 4, Java 7.0.250.16
Minecraft 1.6.1 with the converted Resourcepack "Meine Kraft Working"
Duplicate of MC-1308, please use the search function to see if your bug has already been submitted. Currently over 58% of tickets are being closed as duplicate.