Loaded the map from version 13w02a.

Before reading the rest, on reload my game was corrected, as seen in another screenshot.

Seed being, -1010813662215941621 (As seen in pictures)

Got map error on loading where different 8 wide sections were glitched.
If I attempted to fly over, then drop in, my character would vibrate up and down and would not let me fall. However walking through it from a regular zone I would pass through unharmed. Unless I were to jump, my character would get stuck for a short second.