Tiled example not rendering correctly

[BigBadOwl]

I've been evaluating using the library with the Tiled map editor. I modified sample 11 to use a sample json export outputted from the Tiled application. It renders the scene slightly incorrectly. Can anyone see why?

https://www.dropbox.com/s/mz8xbm51sbpt1ma/sample11.zip?dl=0

[is-equal]

I have this problem.. isometric is not rendered correctly