Event failed to dispatch after stopPropagation

third_party/WebKit/Source/core/events/EventDispatcher.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2011 Google Inc. All rights reserved.
@@ skipping 231 matching lines @@
                           .windowEventContext()
                           .window()
                           ->getExecutionContext(),
                       UseCounter::EventCancelBubbleAffected);
   }
 }
 
 inline void EventDispatcher::dispatchEventPostProcess(
     EventDispatchHandlingState* preDispatchEventHandlerResult) {
   m_event->setTarget(EventPath::eventTargetRespectingTargetRules(*m_node));
+  // https://dom.spec.whatwg.org/#concept-event-dispatch
+  // 14. Unset event’s dispatch flag, stop propagation flag, and stop immediate
+  // propagation flag.
+  m_event->setStopPropagation(false);
+  m_event->setStopImmediatePropagation(false);
+  // 15. Set event’s eventPhase attribute to NONE.
+  m_event->setEventPhase(0);
+  // 16. Set event’s currentTarget attribute to null.
   m_event->setCurrentTarget(nullptr);
-  m_event->setEventPhase(0);
 
   // Pass the data from the preDispatchEventHandler to the
   // postDispatchEventHandler.
   m_node->postDispatchEventHandler(m_event.get(),
                                    preDispatchEventHandlerResult);
 
   bool isClick = m_event->isMouseEvent() &&
                  toMouseEvent(*m_event).type() == EventTypeNames::click;
   if (isClick) {
     // Fire an accessibility event indicating a node was clicked on.  This is
@@ skipping 49 matching lines @@
   // events to open select boxes.
   if (!m_event->isTrusted() && m_event->isMouseEvent() &&
       m_event->type() == EventTypeNames::mousedown &&
       isHTMLSelectElement(*m_node)) {
     UseCounter::count(m_node->document(),
                       UseCounter::UntrustedMouseDownEventDispatchedToSelect);
   }
 }
 
 }  // namespace blink