Fix crash on exit-fullscreen using context menu

The context menu does not like when we delete current widget while
handling the context menu actions.

Change-Id: I18dc9d19ae2a669c97c9d4bc833950fcdc0204b0
Reviewed-by: Michael Brüning <michael.bruning@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/webenginewidgets/api/qwebenginepage.cpp b/src/webenginewidgets/api/qwebenginepage.cpp
index 9d8d52886..75ec44b5d 100644
--- a/src/webenginewidgets/api/qwebenginepage.cpp
+++ b/src/webenginewidgets/api/qwebenginepage.cpp
@@ -1325,7 +1325,8 @@ void QWebEnginePage::triggerAction(WebAction action, bool)
         d->adapter->inspectElementAt(menuData.position());
         break;
     case ExitFullScreen:
-        d->adapter->exitFullScreen();
+        // See under ViewSource, anything that can trigger a delete of the current view is dangerous to call directly here.
+        QTimer::singleShot(0, this, [d](){ d->adapter->exitFullScreen(); });
         break;
     case RequestClose:
         d->adapter->requestClose();