Jens Grotholtmann

In 14w28b this is even possible without using a halfslab. Just place a torch while looking at another torches hitbox oder looking at a leave.
Just for complete info, those issues were closed as duplicates without forwarding the information 😞

Confirmed. I fall through the ground and burned in lava or stuck in the ground of the overworld. Bug "works" bidirectional.

I have a similar problem with the wood in a plains village:
Seed: 1183773345586956472
-180 740

Placing a torch in front of another one leads to this, too.

MC-61823 is related to this, I just posted there, should have searched from bottom.

Similar Problem:
Env: Win8 64bit - Java 7.0.25
I created my first portal to go to the nether, walked through and found myself swimming in lava. The portal was created on a one block thick layer of soulsand.
Next time I used the portal to the nether, I arrived in a new portal, which was next to the existing one in a 90 degree angel.
Just a few minutes ago, I build a portal in the nether, to get access to a village, same problem, I got suck inside some wall. The next time I used the portal, there was a new one, right next to it.

The second issue while arriving at the overworld ensures me, there is no issue with a ghast or a creeper, there is a serios bug!