RESOLVED CONFIGURATION CHANGED 233707
Safari freezes when navigating to Youtube and back on device with iOS 15.0.2/15.0/15.1 
https://bugs.webkit.org/show_bug.cgi?id=233707
Summary Safari freezes when navigating to Youtube and back on device with iOS 15.0.2/...
Madara Freimane
Reported 2021-12-01 08:50:23 PST
Created attachment 445579 [details] sysdiagnose_2021.12.01_14-36-25+0200_iPhone-OS_iPhone_19A404.tar.gz Summary: Safari freezes when navigating to Youtube and back on device with iOS 15.0.2/15.0/15.1 Tested devices: Bug is reproducible on: *iPhone 11 Pro Max | 15.0.2 *iPhone 13 | iOS 15.0 *iPhone 12 Pro Max | iOS 15.1 *iPhone XS | iOS 15.1 Bug is not reproducible on: *iPhone XS Max | iOS 14.6 *iPhone 13 | iOS 15.2 Beta 3 Scenario: Precondition: Active WebRTC call Steps: 1. Put browser in the background 2. Open Youtube app 3. Play a song 4. Put Youtube app in the background 5. Relaunch Safari Actual result: Safari freezes when navigating to Youtube and back to the active WebRTC call. The only way to stop this behaviour is by reloading the page. Expected result: Safari is usable Reproducibility: 80%
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Add attachment proposed patch, testcase, etc.
Alexey Proskuryakov
Comment 1 2021-12-02 18:33:19 PST
rdar://85998808
youenn fablet
Comment 2 2021-12-03 04:58:25 PST
Is it still happening in iOS 15.2 beta?
youenn fablet
Comment 3 2021-12-03 04:59:03 PST
Oh, I see you wrote it is no longer reproducing in iOS 15.2 beta 3
youenn fablet
Comment 4 2021-12-03 05:00:56 PST
Looking at logs, this is indeed an issue when disposing Audio units, which is supposed to be fixed in iOS 15.2 betas. Marking as configuration changed.
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