diff --git a/platform.h b/platform.h
--- a/platform.h
+++ b/platform.h
@@ -364,13 +364,9 @@
     virtual OverlayWindow *createOverlayWindow();
 
     /**
-     * Allows a platform to update the X11 timestamp.
-     * Mostly for the X11 standalone platform to interact with QX11Info.
-     *
-     * Default implementation does nothing. This means code relying on the X timestamp being up to date,
-     * might not be working. E.g. synced X11 window resizing
+     * Queries the current X11 time stamp of the X server.
      */
-    virtual void updateXTime();
+    void updateXTime();
 
     /**
      * Creates the OutlineVisual for the given @p outline.
diff --git a/platform.cpp b/platform.cpp
--- a/platform.cpp
+++ b/platform.cpp
@@ -37,6 +37,8 @@
 #include <KWayland/Server/outputconfiguration_interface.h>
 #include <KWayland/Server/outputchangeset.h>
 
+#include <QX11Info>
+
 namespace KWin
 {
 
@@ -501,8 +503,32 @@
     return nullptr;
 }
 
+static quint32 monotonicTime()
+{
+    timespec ts;
+
+    const int result = clock_gettime(CLOCK_MONOTONIC, &ts);
+    if (result)
+        qCWarning(KWIN_CORE, "Failed to query monotonic time: %s", strerror(errno));
+
+    return ts.tv_sec * 1000 + ts.tv_nsec / 1000000L;
+}
+
 void Platform::updateXTime()
 {
+    switch (kwinApp()->operationMode()) {
+    case Application::OperationModeX11:
+        kwinApp()->setX11Time(QX11Info::getTimestamp(), Application::TimestampUpdate::Always);
+        break;
+
+    case Application::OperationModeXwayland:
+        kwinApp()->setX11Time(monotonicTime(), Application::TimestampUpdate::Always);
+        break;
+
+    default:
+        // Do not update the current X11 time stamp if it's the Wayland only session.
+        break;
+    }
 }
 
 OutlineVisual *Platform::createOutline(Outline *outline)
diff --git a/plugins/platforms/x11/standalone/x11_platform.h b/plugins/platforms/x11/standalone/x11_platform.h
--- a/plugins/platforms/x11/standalone/x11_platform.h
+++ b/plugins/platforms/x11/standalone/x11_platform.h
@@ -62,8 +62,6 @@
     void setupActionForGlobalAccel(QAction *action) override;
 
     OverlayWindow *createOverlayWindow() override;
-
-    void updateXTime() override;
     OutlineVisual *createOutline(Outline *outline) override;
     Decoration::Renderer *createDecorationRenderer(Decoration::DecoratedClientImpl *client) override;
 
diff --git a/plugins/platforms/x11/standalone/x11_platform.cpp b/plugins/platforms/x11/standalone/x11_platform.cpp
--- a/plugins/platforms/x11/standalone/x11_platform.cpp
+++ b/plugins/platforms/x11/standalone/x11_platform.cpp
@@ -348,22 +348,6 @@
     return new OverlayWindowX11();
 }
 
-/*
- Updates xTime(). This used to simply fetch current timestamp from the server,
- but that can cause xTime() to be newer than timestamp of events that are
- still in our events queue, thus e.g. making XSetInputFocus() caused by such
- event to be ignored. Therefore events queue is searched for first
- event with timestamp, and extra PropertyNotify is generated in order to make
- sure such event is found.
-*/
-void X11StandalonePlatform::updateXTime()
-{
-    // NOTE: QX11Info::getTimestamp does not yet search the event queue as the old
-    // solution did. This means there might be regressions currently. See the
-    // documentation above on how it should be done properly.
-    kwinApp()->setX11Time(QX11Info::getTimestamp(), Application::TimestampUpdate::Always);
-}
-
 OutlineVisual *X11StandalonePlatform::createOutline(Outline *outline)
 {
     // first try composited Outline