M src/platform/qt/Window.cpp → src/platform/qt/Window.cpp

@@ -441,6 +441,10 @@ saveConfig();
 	QMainWindow::closeEvent(event);
 }
 
+void Window::focusInEvent(QFocusEvent*) {
+	m_display->forceDraw();
+}
+
 void Window::focusOutEvent(QFocusEvent*) {
 	m_controller->setTurbo(false, false);
 	m_controller->stopRewinding();

M src/platform/qt/Window.h → src/platform/qt/Window.h

@@ -105,6 +105,7 @@ virtual void keyPressEvent(QKeyEvent* event) override;
 	virtual void keyReleaseEvent(QKeyEvent* event) override;
 	virtual void resizeEvent(QResizeEvent*) override;
 	virtual void closeEvent(QCloseEvent*) override;
+	virtual void focusInEvent(QFocusEvent*) override;
 	virtual void focusOutEvent(QFocusEvent*) override;
 	virtual void dragEnterEvent(QDragEnterEvent*) override;
 	virtual void dropEvent(QDropEvent*) override;