What is happening:
I could be wrong but it seems that the hitbox of the building where Parsley is at, in Cantermore, is currently duplicated. The shape of the invisible obstacles seem to match that of the building where Parsley's at.
What should be happening:
There should be absolutely no obstruction in the space between that building and the academy building.
Steps to reproduce the issue:
Head to the Cantermore Academy and walk between the buildings as shown in the screenshot and video. Your pony should either bump into something invisible or start to walk up in the air.
Game client version:
Windows 7 Ultimate x64 Service Pack 1 Build 7606
Crash logs or exceptions generated: