[Webkit-unassigned] [Bug 212537] ASSERTION FAILURE (r220931): !m_function in ~CompletionHandler() after switch tabs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=212537

--- Comment #3 from Chris Dumez <cdumez at apple.com> ---
I suspect the issue could be related to WebProcess::cancelMarkAllLayersVolatile(), which I believe gets called when cancelling suspension. cancelMarkAllLayersVolatile() destroys m_pageMarkingLayersAsVolatileCounter which may not have called its CompletionHandler yet.

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