The first bug is that the fences don't merge into each other.
The second bug is that doors don't close normally like the upper side is open and the side under is closed.
The third glitch is that glass pane not merging into each other.
Ok, if that is the case you should submit a bug report about it by clicking here. It's better to report bugs that way since they will be looked into faster usually than making a thread on the forums.