diff --git a/dom/base/nsInProcessTabChildGlobal.cpp b/dom/base/nsInProcessTabChildGlobal.cpp
index 06e7b9468eb7..2738664b6365 100644
--- a/dom/base/nsInProcessTabChildGlobal.cpp
+++ b/dom/base/nsInProcessTabChildGlobal.cpp
@@ -260,6 +260,7 @@ nsInProcessTabChildGlobal::GetOwnerContent()
 nsresult
 nsInProcessTabChildGlobal::PreHandleEvent(EventChainPreVisitor& aVisitor)
 {
+  aVisitor.mForceContentDispatch = true;
   aVisitor.mCanHandle = true;
 
 #ifdef DEBUG