Shouldn't track this either, just to be safe.

src/main/java/com/gmail/nossr50/util/BlockUtils.java

@@ -51,7 +51,6 @@ public final class BlockUtils {
             case VINE:
             case WATER_LILY:
             case YELLOW_FLOWER:
-            case COCOA:
             case EMERALD_ORE:
                 return true;