I was playing Minecraft 14w29b and i noticed two issues, the first issue is that if I break a block, I get the block but it is not removed from the world, but it becomes possible to walk through it, and it acts as if it's not there, also it makes you able to see through the world if i jump in a hole where this problem occurs, the second issue is sort of the same, when I open/close a door, the door itself does not open or close for 5-10 seconds but I can still walk through it because the hitbox still opens and closes but the animation of the door changing is delayed, I hope you guys can fix these issues, thank you.
-Mattclxx0