Share Age Range Permission - Defect 'Ask Always'

1. Share Age Range Permission is set to 'Ask First'.
2. Application requested for AgeRange via requestAgeRange API.
3. System presented a consent window where user has to make a choice.
4. User did not acted.
5. Application was pushed to background.
6. Our Application supports PushToTalk Framework and we have successfully joined the channel already.
7. User tapped on the blue-pill , SystemUI will get presented.
8. User tapped on the SystemUI, A New Full Screen SystemUI will get presented.
9. User chosen 'Leave' option and our application left the active channel.

10 User brought the application to foreground and the previous "Share Age Range" system window disappeared. 11. After Step 10, We need to terminate and launch our application in order to get the "Share Age Range" system window.

Is "Share Age Range" system window getting disappear is expected here or a BUG