[Webkit-unassigned] [Bug 251532] New: iOS 16.3 - WebAudio muted when the silent switch is ON and when app goes to background

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=251532

            Bug ID: 251532
           Summary: iOS 16.3 - WebAudio muted when the silent switch is ON
                    and when app goes to background
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: adrien.wurth at iwebdj.com
                CC: cdumez at apple.com

Hello! Two big issues with the WebAudio implementation in WKWebView : 

1. since iOS 16.3 (new bug!), WebAudio is muted when the silent switch on the side of the phone is ON

2. since iOS 15 (!!), WebAudio is muted when the app goes to background. It is a known bug but it has been mistakenly flagged as "resolved/closed" here 
: https://bugs.webkit.org/show_bug.cgi?id=237878

3. as a bonus : when the power saving mode is ON, the WebView performance drops too much (15 FPS), making the app not fully usable.


Here is a DEMO VIDEO of the problems : https://www.youtube.com/watch?v=lpVfctVj8qE


These 3 points don't happen with Native Swift apps, so it is very confusing for the users and I assume it is a mistake! 

For now it is impossible to make a serious/usable music app in the WebView...

Can someone please seriously look at this for a quick fix?


A big thanks!!

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