[Webkit-unassigned] [Bug 222712] REGRESSION (r272300): [iOS] ASSERTION FAILED: Unsafe to ref/deref from different threads under WebViewLayerFlushScheduler::layerFlushCallback

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222712

--- Comment #3 from Ryan Haddad <ryanhaddad at apple.com> ---
This is also seen with 

    TestWebKitAPI.CopyHTML.SanitizationPreservesCharacterSet
        2021-03-03 22:02:57.378 TestWebKitAPI[30721:41622219] PBItemCollectionServicer connection disconnected.
        2021-03-03 22:02:57.456 TestWebKitAPI[30721:41622219] PBItemCollectionServicer connection disconnected.
        ASSERTION FAILED: Unsafe to ref/deref from different threads
        m_isOwnedByMainThread == isMainThread()
        /Volumes/Data/worker/ios-simulator-14-debug/build/WebKitBuild/Debug-iphonesimulator/usr/local/include/wtf/RefCounted.h(114) : void WTF::RefCountedBase::applyRefDerefThreadingCheck() const

https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.CopyHTML.SanitizationPreservesCharacterSet

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