[Webkit-unassigned] [Bug 243121] New: REGRESSION (iOS 16 beta 3) - getUserMedia fails in WKWebView

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=243121

            Bug ID: 243121
           Summary: REGRESSION (iOS 16 beta 3) - getUserMedia fails in
                    WKWebView
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kacilambeth at nianticlabs.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

Created attachment 461151

  --> https://bugs.webkit.org/attachment.cgi?id=461151&action=review

Video of minimum repro

WKWebView getUserMedia regression between iOS 15.5 and 16 beta 3

Minimum repro test: https://webrtc.github.io/samples/src/content/getusermedia/gum/
Expectation: User clicks "Open Camera", user allows camera permissions, camera feed is displayed 
Result: Camera feed is not displayed when camera permissions are allowed (frame remains black)

As a result of this bug, Niantic WebAR sites are broken impacting major brands including: Paramount Pictures, Universal Pictures, Marvel, LA Dodgers, MGM, Xbox, & More

Video attached showing unexpected behavior in Chrome WKWebView on iPhone 11 running iOS 16 beta 3.

Example of impacted Paramount Pictures website (Opened in WKWebView): https://whatsmycallsign.com
Expected result: After user enters their name, and allows camera permissions, they see their front camera feed with an AR face effect. 
Actual result on iOS 16 beta 3 WKWebVIew: User enters their name, allows camera permissions, the camera feed is not displayed

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