Hi Cole,
I just double confirmed :-)
My GUI graphic has no collision box, Physics are off in both tabs and just for testing I made sure no objects where around the area. (So that nothing could push it or move it). Oh and I turned off physics in the environment.
When I launched the game the same issue was presented.
What makes me think it's a bug is that if I do exactly the same but keep the tile size height to 10 then everything is fine.
I'm creating this game for the Iphone and a height of 10 is the perfect fit (landscape), anything bigger is not and this is when I hit the issue.