fix(window): prevent drawing when the window is not displayed

src/main/java/de/extio/game_engine/renderer/container/Window.java

@@ -231,6 +231,9 @@ public class Window extends AbstractClientModule implements InitializingBean {
 	}
 	
 	public void draw() {
+		if (!this.isDisplayed()) {
+			return;
+		}
 		if (this.area.getDimension().getX() <= 0 || this.area.getDimension().getY() <= 0) {
 			return;
 		}