I think I have found a bug whilst drawing a sprite batch to a texture.
This is what the result is when I draw to the screen (note the sprite batch only draws the grass on the top left of the screen):
This is what the same draw calls into a texture produce:
Here is a link to the zipped up repo: https://drive.google.com/file/d/0BwUPaAnzkOY3UnJheDZoci1XUEU/view?usp=sharing
EDIT: Updated code and screenshots to show texture drawn onto the screen.