Popover-Test is a project mainly written in Objective-C, it's free.
Demo of a bug in iOS 5 around popovers?
Here's the nut of it. The popoverArrowDirection docs say:
The default value of this property is UIPopoverArrowDirectionUnknown. When you present the popover, the value changes to reflect the actual direction of the arrow being used by the popover. When the popover is subsequently dismissed, the value of this property returns to UIPopoverArrowDirectionUnknown.
However, in my testing, on iOS 5, the arrow direction is always unknown after presentation (i.e., -1).
What am I doing wrong here?