Even I do not know if it's a bug, or you decide to place in that position, but I used to be better located.
The stairs were in a different order position, which seemed more comfortable now.
Environment
S.O:Microsoft Windows 7 64 bits
HDD: 2048 GB
PRSS: Intel Pentium G645 [2.90 GhZ]
MR: 8 GB RAM DDR3
GA: NVidia GF210 [2 GB DDR5]
Java Version: Java 8 64 Bits
This post is a duplicate of MC-57895.