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

@@ -64,7 +64,6 @@ m_gl->create();
 	}
 
 	m_painter = new PainterGL(windowHandle(), m_gl, forceVersion);
-	setUpdatesEnabled(false); // Prevent paint events, which can cause race conditions
 }
 
 DisplayGL::~DisplayGL() {
@@ -475,8 +474,6 @@ m_needsUnlock = false;
 	}
 	if (!m_queue.isEmpty()) {
 		QMetaObject::invokeMethod(this, "draw", Qt::QueuedConnection);
-	} else {
-		m_swapTimer.start();
 	}
 }
 

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

@@ -60,7 +60,7 @@ void clearShaders() override;
 	void resizeContext() override;
 
 protected:
-	virtual void paintEvent(QPaintEvent*) override {}
+	virtual void paintEvent(QPaintEvent*) override { forceDraw(); }
 	virtual void resizeEvent(QResizeEvent*) override;
 
 private: