ah sorry I didn't see it from a search, must have been searching the wrong terms!
happening to me too mc 1.7.2
seed is -714177797791821777 and co ordinates are
x: -7
y: 86
z: 223
You also can't smelt using the planks or logs :/ still not fixed for the 1.7 pre-release
I am also seeing this behaviour
[media]