[REG 5.12 -> 5.13] QWebEngineUrlRequestInterceptor doesn't get called for websocket connections

diff --git i/examples/webenginewidgets/simplebrowser/main.cpp w/examples/webenginewidgets/simplebrowser/main.cpp
index ddc8b4d0..c7c42616 100644
--- i/examples/webenginewidgets/simplebrowser/main.cpp
+++ w/examples/webenginewidgets/simplebrowser/main.cpp
@@ -54,6 +54,8 @@
 #include <QApplication>
 #include <QWebEngineProfile>
 #include <QWebEngineSettings>
+#include <QWebEngineUrlRequestInterceptor>
+#include <QDebug>
 
 QUrl commandLineUrlArgument()
 {
@@ -65,6 +67,16 @@ QUrl commandLineUrlArgument()
     return QUrl(QStringLiteral("https://www.qt.io"));
 }
 
+class Interceptor : public QWebEngineUrlRequestInterceptor
+{
+    void interceptRequest(QWebEngineUrlRequestInfo&);
+};
+
+void Interceptor::interceptRequest(QWebEngineUrlRequestInfo &info)
+{
+    qDebug() << info.requestUrl();
+}
+
 int main(int argc, char **argv)
 {
     QCoreApplication::setOrganizationName("QtExamples");
@@ -79,6 +91,9 @@ int main(int argc, char **argv)
     QWebEngineSettings::defaultSettings()->setAttribute(QWebEngineSettings::DnsPrefetchEnabled, true);
     QWebEngineProfile::defaultProfile()->setUseForGlobalCertificateVerification();
 #endif
+    Interceptor interceptor{};
+    //QWebEngineProfile::defaultProfile()->setRequestInterceptor(&interceptor);
+    QWebEngineProfile::defaultProfile()->setUrlRequestInterceptor(&interceptor);
 
     QUrl url = commandLineUrlArgument();