diff --git a/xembed-sni-proxy/fdoselectionmanager.cpp b/xembed-sni-proxy/fdoselectionmanager.cpp
--- a/xembed-sni-proxy/fdoselectionmanager.cpp
+++ b/xembed-sni-proxy/fdoselectionmanager.cpp
@@ -158,8 +158,10 @@
         const auto event = reinterpret_cast<xcb_configure_request_event_t *>(ev);
         const auto sniProxy = m_proxies.value(event->window);
         if (sniProxy) {
-            // The embedded window tries to move or resize. Ignore this request and send the current configuration.
-            sniProxy->sendConfigureNotification();
+            // The embedded window tries to move or resize. Ignore move, handle resize only.
+            if ((event->value_mask & XCB_CONFIG_WINDOW_WIDTH) || (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)) {
+                sniProxy->resizeWindow(event->width, event->height);
+            }
         }
     }
 
diff --git a/xembed-sni-proxy/sniproxy.h b/xembed-sni-proxy/sniproxy.h
--- a/xembed-sni-proxy/sniproxy.h
+++ b/xembed-sni-proxy/sniproxy.h
@@ -50,7 +50,7 @@
 
     void update();
     void stackContainerWindow(const uint32_t stackMode) const;
-    void sendConfigureNotification() const;
+    void resizeWindow(const uint16_t width, const uint16_t height) const;
 
     /**
      * @return the category of the application associated to this item
diff --git a/xembed-sni-proxy/sniproxy.cpp b/xembed-sni-proxy/sniproxy.cpp
--- a/xembed-sni-proxy/sniproxy.cpp
+++ b/xembed-sni-proxy/sniproxy.cpp
@@ -20,6 +20,7 @@
 
 #include "sniproxy.h"
 
+#include <algorithm>
 #include <xcb/xcb.h>
 #include <xcb/xcb_atom.h>
 #include <xcb/xcb_event.h>
@@ -223,20 +224,19 @@
     xcb_configure_window(c, m_containerWid, XCB_CONFIG_WINDOW_STACK_MODE, stackData);
 }
 
-void SNIProxy::sendConfigureNotification() const
+void SNIProxy::resizeWindow(const uint16_t width, const uint16_t height) const
 {
-    xcb_configure_notify_event_t event;
-    memset(&event, 0x00, sizeof(xcb_configure_notify_event_t));
-    event.response_type = XCB_CONFIGURE_NOTIFY;
-    event.event = m_windowId;
-    event.window = m_windowId;
-    event.x = 0;
-    event.y = 0;
-    event.width = s_embedSize;
-    event.height = s_embedSize;
-
     auto connection = QX11Info::connection();
-    xcb_send_event(connection, false, m_windowId, XCB_EVENT_MASK_STRUCTURE_NOTIFY, reinterpret_cast<char *>(&event));
+
+    uint16_t widthNormalized = std::min(width, s_embedSize);
+    uint16_t heighNormalized = std::min(height, s_embedSize);
+
+    const uint32_t windowSizeConfigVals[2] = { widthNormalized, heighNormalized };
+    xcb_configure_window(connection, m_windowId,
+                         XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
+                         windowSizeConfigVals);
+
+    xcb_flush(connection);
 }
 
 QSize SNIProxy::calculateClientWindowSize() const
@@ -258,12 +258,7 @@
     if (clientWindowSize.isEmpty() || clientWindowSize.width() > s_embedSize || clientWindowSize.height() > s_embedSize) {
         qCDebug(SNIPROXY) << "Resizing window" << m_windowId << Title() << "from w*h" << clientWindowSize;
 
-        sendConfigureNotification();
-
-        const uint32_t windowSizeConfigVals[2] = { s_embedSize, s_embedSize };
-        xcb_configure_window(c, m_windowId,
-                             XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
-                             windowSizeConfigVals);
+        resizeWindow(s_embedSize, s_embedSize);
 
         clientWindowSize = QSize(s_embedSize, s_embedSize);
     }