diff --git a/src/gui/kernel/qplatforminputcontext.cpp b/src/gui/kernel/qplatforminputcontext.cpp
index 4cf7acea2ed..9d3ee4acb6b 100644
--- a/src/gui/kernel/qplatforminputcontext.cpp
+++ b/src/gui/kernel/qplatforminputcontext.cpp
@@ -47,6 +47,11 @@ QT_BEGIN_NAMESPACE
 QPlatformInputContext::QPlatformInputContext()
     : QObject(*(new QPlatformInputContextPrivate))
 {
+    // Delay initialization of cached input direction
+    // until super class has finished constructing.
+    QMetaObject::invokeMethod(this, [this]{
+        m_inputDirection = inputDirection();
+    }, Qt::QueuedConnection);
 }
 
 /*!
@@ -198,6 +203,9 @@ QLocale QPlatformInputContext::locale() const
 void QPlatformInputContext::emitLocaleChanged()
 {
     emit QGuiApplication::inputMethod()->localeChanged();
+
+    // Changing the locale might have updated the input direction
+    emitInputDirectionChanged(inputDirection());
 }
 
 Qt::LayoutDirection QPlatformInputContext::inputDirection() const
@@ -207,7 +215,11 @@ Qt::LayoutDirection QPlatformInputContext::inputDirection() const
 
 void QPlatformInputContext::emitInputDirectionChanged(Qt::LayoutDirection newDirection)
 {
+    if (newDirection == m_inputDirection)
+        return;
+
     emit QGuiApplication::inputMethod()->inputDirectionChanged(newDirection);
+    m_inputDirection = newDirection;
 }
 
 /*!
diff --git a/src/gui/kernel/qplatforminputcontext.h b/src/gui/kernel/qplatforminputcontext.h
index 05d7497f9cc..481f97a065b 100644
--- a/src/gui/kernel/qplatforminputcontext.h
+++ b/src/gui/kernel/qplatforminputcontext.h
@@ -72,6 +72,8 @@ private:
     friend class QGuiApplication;
     friend class QGuiApplicationPrivate;
     friend class QInputMethod;
+
+    Qt::LayoutDirection m_inputDirection;
 };
 
 QT_END_NAMESPACE