Open Radar

 
Summary:
If I set accessibilityIdentifier programmatically on an NSPopover (or on the NSView which its contentViewController is associated with), it does not show up in Accessibility Inspector when I mouse over the popover.

Steps to Reproduce:
1. Start with the sample from https://developer.apple.com/library/mac/samplecode/Popover/Introduction/Intro.html (Version 1.2, 2015-12-17)
2. In MyViewController createPopover, add this line after the popover was created:
   self.myPopover.accessibilityIdentifier = @"foo1";
3. In Main.storyboard, select the PopoverView node and use the Identity Inspector tab of the right-hand panel to set Accessibility Identity > Identifier to "foo2"
4. Run the app
5. Launch the OS X "Accessibility Inspector" app
6. In the popover sample app, click the button to open the popover
7. Mouse over a blank part of the popover

Expected Results:
Under Attributes, accessibilityIdentifier has the value "foo1" _or_ "foo2".

accessibilityRole shows "AXPopover" however, so it's clear you are targeting the popover for inspection.

Actual Results:
accessibilityIdentifier is not listed (this is the behavior you see normally when no identifier has been set)

Version:
OS X 10.11.4
Xcode 7.3.1