Slide over button failure

I have a button which gets moved so it's 50% off the screen on certain views. The button is still active and this works fine.


However under slideover in iOS 9, tapping the button does not trigger the button's action. The button's appearance is still toggled indicating the target was hit.


This only applies in slideover. Using the same window proportion in splitview, the button works fine (and obviously it works fine in fullscreen)


i've created a test project, and it appears that if you place a UIButton any closer than 18pt from the edge of the screen, in splitview, some portion of the button will be tappable (colour changes) but the button's action is triggered.


If you tap rapidly on the button it will still fire, so it appears there's some system level gesture or something added to enable splitview which is consuming the tap gesture that close to the edge.


Anyone else come across this?


I'm filing a radar, but wondered if anyone had figured out a work around. (Other than moving the button!)

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Bug ID is 22610310