Disable the shadow on UIPopoverViewController's content view
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I'm creating a custom popover for a UIPopoverController by subclassing UIViewController to manage the content view and UIPopoverBackgroundView for a custom background. Everything works great, except the UIPopoverController is applying a shadow to the content view, making the content appear bordered with shadow. I can't seem to find which view's layer is shadowed. How can I disable this shadow? Has anyone else ran into this problem?