Audio playback stops working after using another app (AIR 26 on iOS)

Audio playback stops working in an AIR 26 for iOS app after playing audio from a different app

Steps to reproduce:

1. Launch an AIR 26 app. Play some audio ( soundChannel = sound.play(); )

2. Minimize the AIR 26 app and launch the built-in iOS "Voice Memos" app

3. Make a recording in "Voice Memos" and the play it back

4. Return to the AIR 26 app. Try to play some audio ( soundChannel = sound.play(); )

Expected results: Audio playback works correctly in step 4

Actual results: Audio does not play in step 4. The SoundChannel gets created, and no errors are thrown, but the SoundChannel's position never advances past 0

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