CATiledlayer distortes CGPath

I am using CATiledlayers and UIScrollviews to draw CGPaths at different levels of detail. I am drawing big pictures (4000x4000). On the iPhone the image gets distorted for these large pictures.

I have finally found a solution. My mistake was that I set the tileSize to the size of the image I was drawing (copied fro开发者_Go百科m a PDF sample demo somewhere). The solution is to set the tileSize to a max of 2000x2000.

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Apple confirmed this was a bug when this was posted