diff --git a/src/gui/kernel/qwindowsysteminterface.cpp b/src/gui/kernel/qwindowsysteminterface.cpp
index 8e50e5ef9e6..2900cb40ea0 100644
--- a/src/gui/kernel/qwindowsysteminterface.cpp
+++ b/src/gui/kernel/qwindowsysteminterface.cpp
@@ -57,7 +57,6 @@ QT_BEGIN_NAMESPACE
 
 QElapsedTimer QWindowSystemInterfacePrivate::eventTime;
 bool QWindowSystemInterfacePrivate::synchronousWindowSystemEvents = false;
-bool QWindowSystemInterfacePrivate::platformFiltersEvents = false;
 bool QWindowSystemInterfacePrivate::TabletEvent::platformSynthesizesMouse = true;
 QWaitCondition QWindowSystemInterfacePrivate::eventsFlushed;
 QMutex QWindowSystemInterfacePrivate::flushEventMutex;
@@ -1137,15 +1136,10 @@ bool QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::ProcessEventsFla
     int nevents = 0;
 
     while (QWindowSystemInterfacePrivate::windowSystemEventsQueued()) {
-        QWindowSystemInterfacePrivate::WindowSystemEvent *event = nullptr;
-
-        if (QWindowSystemInterfacePrivate::platformFiltersEvents) {
-            event = QWindowSystemInterfacePrivate::getWindowSystemEvent();
-        } else {
-            event = flags & QEventLoop::ExcludeUserInputEvents ?
+        QWindowSystemInterfacePrivate::WindowSystemEvent *event =
+                flags & QEventLoop::ExcludeUserInputEvents ?
                         QWindowSystemInterfacePrivate::getNonUserInputWindowSystemEvent() :
                         QWindowSystemInterfacePrivate::getWindowSystemEvent();
-        }
         if (!event)
             break;
 
@@ -1184,21 +1178,6 @@ bool QWindowSystemInterface::nonUserInputEventsQueued()
     return QWindowSystemInterfacePrivate::nonUserInputEventsQueued();
 }
 
-/*!
-    Platforms that implement UserInputEvent filtering at native event level must
-    set this property to \c true. The default is \c false, which means that event
-    filtering logic is handled by QWindowSystemInterface. Doing the filtering in
-    platform plugins is necessary when supporting AbstractEventDispatcher::filterNativeEvent(),
-    which should respect flags that were passed to event dispatcher's processEvents()
-    call.
-
-    \since 5.12
-*/
-void QWindowSystemInterface::setPlatformFiltersEvents(bool enable)
-{
-    QWindowSystemInterfacePrivate::platformFiltersEvents = enable;
-}
-
 // --------------------- QtTestLib support ---------------------
 
 // The following functions are used by testlib, and need to be synchronous to avoid
diff --git a/src/gui/kernel/qwindowsysteminterface.h b/src/gui/kernel/qwindowsysteminterface.h
index bf98c33a1a1..66af163f058 100644
--- a/src/gui/kernel/qwindowsysteminterface.h
+++ b/src/gui/kernel/qwindowsysteminterface.h
@@ -296,7 +296,6 @@ public:
     static void deferredFlushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags);
     static int windowSystemEventsQueued();
     static bool nonUserInputEventsQueued();
-    static void setPlatformFiltersEvents(bool enable);
 };
 
 #ifndef QT_NO_DEBUG_STREAM
diff --git a/src/plugins/platforms/xcb/qxcbintegration.cpp b/src/plugins/platforms/xcb/qxcbintegration.cpp
index ed9e87a0369..f0ed49ecc01 100644
--- a/src/plugins/platforms/xcb/qxcbintegration.cpp
+++ b/src/plugins/platforms/xcb/qxcbintegration.cpp
@@ -137,8 +137,6 @@ QXcbIntegration::QXcbIntegration(const QStringList &parameters, int &argc, char
     m_instance = this;
     qApp->setAttribute(Qt::AA_CompressHighFrequencyEvents, true);
 
-    QWindowSystemInterface::setPlatformFiltersEvents(true);
-
     qRegisterMetaType<QXcbWindow*>();
 #if QT_CONFIG(xcb_xlib)
     XInitThreads();