My app presents a popover mail controller, which works fine on iPhone and on iPadOS <26.4. However in iPadOS =>26.4, there is no exit or cancel button in the top left corner as usual. The popover can only be closed by tapping the top centre of the view where the 'swipe down bar' is; it cannot be closed by actually swiping down. This is obviously not intuitive for a user. Since the mail controller is not customizable, I'm asking whether this is a bug, a new (unintuitive) design, or if implementations of a mail controller need updating on the new OS.