diff --git a/src/plugins/platforms/wasm/qwasmclipboard.cpp b/src/plugins/platforms/wasm/qwasmclipboard.cpp
index 1ef2e2a984b..d6343e9f6bc 100644
--- a/src/plugins/platforms/wasm/qwasmclipboard.cpp
+++ b/src/plugins/platforms/wasm/qwasmclipboard.cpp
@@ -51,7 +51,7 @@ static void qClipboardCutTo(val event)
 {
     if (!QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi()) {
         // Send synthetic Ctrl+X to make the app cut data to Qt's clipboard
-         QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>(
+         QWindowSystemInterface::handleKeyEvent(
                      0, QEvent::KeyPress, Qt::Key_C, Qt::ControlModifier, "X");
    }
 
@@ -62,7 +62,7 @@ static void qClipboardCopyTo(val event)
 {
     if (!QWasmIntegration::get()->getWasmClipboard()->hasClipboardApi()) {
         // Send synthetic Ctrl+C to make the app copy data to Qt's clipboard
-            QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>(
+            QWindowSystemInterface::handleKeyEvent(
                         0, QEvent::KeyPress, Qt::Key_C, Qt::ControlModifier, "C");
     }
     commonCopyEvent(event);
@@ -74,7 +74,7 @@ static void qWasmClipboardPaste(QMimeData *mData)
     QWasmIntegration::get()->clipboard()->
         QPlatformClipboard::setMimeData(mData, QClipboard::Clipboard);
 
-    QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>(
+    QWindowSystemInterface::handleKeyEvent(
                 0, QEvent::KeyPress, Qt::Key_V, Qt::ControlModifier, "V");
 }
 
diff --git a/src/plugins/platforms/wasm/qwasmcompositor.cpp b/src/plugins/platforms/wasm/qwasmcompositor.cpp
index 0f082543ff4..f4f2d1b11dd 100644
--- a/src/plugins/platforms/wasm/qwasmcompositor.cpp
+++ b/src/plugins/platforms/wasm/qwasmcompositor.cpp
@@ -54,7 +54,9 @@ QWasmCompositor::QWasmCompositor(QWasmScreen *screen)
             QPointingDevice::Capability::Position | QPointingDevice::Capability::Area
                 | QPointingDevice::Capability::NormalizedPosition,
             10, 0);
+
     QWindowSystemInterface::registerInputDevice(m_touchDevice.get());
+    QWindowSystemInterface::setSynchronousWindowSystemEvents(true);
 }
 
 QWasmCompositor::~QWasmCompositor()
@@ -283,7 +285,7 @@ void QWasmCompositor::deliverUpdateRequest(QWasmWindow *window, UpdateRequestDel
         window->QPlatformWindow::deliverUpdateRequest();
     } else {
         QWindow *qwindow = window->window();
-        QWindowSystemInterface::handleExposeEvent<QWindowSystemInterface::SynchronousDelivery>(
+        QWindowSystemInterface::handleExposeEvent(
             qwindow, QRect(QPoint(0, 0), qwindow->geometry().size()));
     }
 }
@@ -472,7 +474,7 @@ bool QWasmCompositor::deliverEventToTarget(const PointerEvent &event, QWindow *e
         MouseEvent::mouseEventTypeFromEventType(event.type, windowArea);
 
     return eventType != QEvent::None &&
-           QWindowSystemInterface::handleMouseEvent<QWindowSystemInterface::SynchronousDelivery>(
+           QWindowSystemInterface::handleMouseEvent(
                eventTarget, QWasmIntegration::getTimestamp(),
                eventTarget->mapFromGlobal(targetPointClippedToScreen),
                targetPointClippedToScreen, event.mouseButtons, event.mouseButton,
@@ -574,7 +576,7 @@ bool QWasmCompositor::processKeyboard(int eventType, const EmscriptenKeyboardEve
     if (translatedEvent.text.size() > 1)
         translatedEvent.text.clear();
     const auto result =
-            QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>(
+            QWindowSystemInterface::handleKeyEvent(
                     0, translatedEvent.type, translatedEvent.key, modifiers, translatedEvent.text);
     return clipboardResult == ProcessKeyboardResult::NativeClipboardEventAndCopiedDataNeeded
             ? ProceedToNativeEvent
@@ -701,7 +703,7 @@ bool QWasmCompositor::processTouch(int eventType, const EmscriptenTouchEvent *to
     if (eventType == EMSCRIPTEN_EVENT_TOUCHCANCEL)
         accepted = QWindowSystemInterface::handleTouchCancelEvent(targetWindow, QWasmIntegration::getTimestamp(), m_touchDevice.get(), keyModifier);
     else
-        accepted = QWindowSystemInterface::handleTouchEvent<QWindowSystemInterface::SynchronousDelivery>(
+        accepted = QWindowSystemInterface::handleTouchEvent(
                 targetWindow, QWasmIntegration::getTimestamp(), m_touchDevice.get(), touchPointList, keyModifier);
 
     return static_cast<int>(accepted);
@@ -721,12 +723,12 @@ void QWasmCompositor::releaseCapture()
 void QWasmCompositor::leaveWindow(QWindow *window)
 {
     m_windowUnderMouse = nullptr;
-    QWindowSystemInterface::handleLeaveEvent<QWindowSystemInterface::SynchronousDelivery>(window);
+    QWindowSystemInterface::handleLeaveEvent(window);
 }
 
 void QWasmCompositor::enterWindow(QWindow *window, const QPoint &pointInTargetWindowCoords, const QPoint &targetPointInScreenCoords)
 {
-    QWindowSystemInterface::handleEnterEvent<QWindowSystemInterface::SynchronousDelivery>(window, pointInTargetWindowCoords, targetPointInScreenCoords);
+    QWindowSystemInterface::handleEnterEvent(window, pointInTargetWindowCoords, targetPointInScreenCoords);
 }
 
 bool QWasmCompositor::processMouseEnter(const EmscriptenMouseEvent *mouseEvent)
diff --git a/src/plugins/platforms/wasm/qwasminputcontext.cpp b/src/plugins/platforms/wasm/qwasminputcontext.cpp
index 1bf8b5f1683..1c004b226fa 100644
--- a/src/plugins/platforms/wasm/qwasminputcontext.cpp
+++ b/src/plugins/platforms/wasm/qwasminputcontext.cpp
@@ -144,7 +144,7 @@ void QWasmInputContext::inputStringChanged(QString &inputString, QWasmInputConte
     Q_UNUSED(context)
     QKeySequence keys = QKeySequence::fromString(inputString);
     // synthesize this keyevent as android is not normal
-    QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>(
+    QWindowSystemInterface::handleKeyEvent(
                 0, QEvent::KeyPress,keys[0].key(), keys[0].keyboardModifiers(), inputString);
 }