--- a/Preferences/__init__.py Wed Jan 16 19:25:34 2019 +0100 +++ b/Preferences/__init__.py Wed Jan 16 19:26:32 2019 +0100 @@ -1319,6 +1319,15 @@ }) except AttributeError: pass + try: + # Qt 5.12+ + cls.webBrowserDefaults.update({ + "DnsPrefetchEnabled": + webEngineSettings.testAttribute( + QWebEngineSettings.DnsPrefetchEnabled), + }) + except AttributeError: + pass cls.webEngineSettingsIntitialized = True