Open Radar

 
Summary:
When a local notification with a custom long alert sound fires outside of the app that schedules it, a banner appears at the top of the screen. Pulling this banner down or 3D Touching the notification banner reveals a list of notification actions. From iOS 7 through 9.3, this action stops the alert sound immediately. In iOS 10 Beta 6/7, this behavior no longer happens. This means that a user is forced to quickly make a choice in order to stop the alert sound.

Steps to Reproduce:
1. Schedule a UILocalNotification with a long custom alert sound
2. Return to Home screen and wait for notification to fire
3. Pull down the notification to reveal more options

Expected Results:
Notification sound stops immediately when notification is pulled down to reveal the actions

Actual Results:
Notification sound continues playing non-stop in the background, causing the user undue stress while he's faced with making a decision to tap on one of the actions in the shortest amount of time in order to shut the sound up.

Version:
iOS 10.0 (14A5345a)

Notes:
This bug previously occurred in iOS 8 beta, and was resolved by GM seed. See rdar://17941612

Configuration:
iPhone 6s Plus (and simulators)

Attachments:
'Alert Sound Uncut.mp4' and 'Notification With Wrong Alert Sound.zip' were successfully uploaded.

https://www.dropbox.com/s/xvdcdh6c8527d2s/Alert%20Sound%20Uncut.mp4?dl=1
https://www.dropbox.com/s/q1nf2mbr6sgcdb8/Notification%20With%20Wrong%20Alert%20Sound.zip?dl=1