diff --git a/autotests/integration/internal_window.cpp b/autotests/integration/internal_window.cpp
--- a/autotests/integration/internal_window.cpp
+++ b/autotests/integration/internal_window.cpp
@@ -538,11 +538,11 @@
     // normal move should be synced
     internalClient->move(5, 10);
     QCOMPARE(internalClient->geometry(), QRect(5, 10, 100, 100));
-    QCOMPARE(win.geometry(), QRect(5, 10, 100, 100));
+    QTRY_COMPARE(win.geometry(), QRect(5, 10, 100, 100));
     // another move should also be synced
     internalClient->move(10, 20);
     QCOMPARE(internalClient->geometry(), QRect(10, 20, 100, 100));
-    QCOMPARE(win.geometry(), QRect(10, 20, 100, 100));
+    QTRY_COMPARE(win.geometry(), QRect(10, 20, 100, 100));
 
     // now move with a Geometry update blocker
     {
@@ -552,7 +552,7 @@
         QCOMPARE(win.geometry(), QRect(10, 20, 100, 100));
     }
     // after destroying the blocker it should be synced
-    QCOMPARE(win.geometry(), QRect(5, 10, 100, 100));
+    QTRY_COMPARE(win.geometry(), QRect(5, 10, 100, 100));
 }
 
 void InternalWindowTest::testSkipCloseAnimation_data()
diff --git a/shell_client.cpp b/shell_client.cpp
--- a/shell_client.cpp
+++ b/shell_client.cpp
@@ -543,7 +543,8 @@
     const QRect windowRect = QRect(geom.topLeft() + QPoint(borderLeft(), borderTop()),
                                     geom.size() - QSize(borderLeft() + borderRight(), borderTop() + borderBottom()));
     if (m_internalWindow->geometry() != windowRect) {
-        m_internalWindow->setGeometry(windowRect);
+        // delay to end of cycle to prevent freeze, see BUG 384441
+        QTimer::singleShot(0, m_internalWindow, std::bind(static_cast<void (QWindow::*)(const QRect&)>(&QWindow::setGeometry), m_internalWindow, windowRect));
     }
 }