[-] FO : do not use dispatcher routes for static files

classes/Dispatcher.php

@@ -676,6 +676,9 @@ class DispatcherCore
 				return strtolower($this->controller_not_found);
 			$controller = $this->controller_not_found;
 			
+			// If the request_uri matches a static file, then there is no need to check the routes, we keep "controller_not_found" (a static file should not go through the dispatcher) 
+			if (!preg_match('/\.(gif|jpe?g|png|css|js|ico)$/i', $this->request_uri))
+			{
 				// Add empty route as last route to prevent this greedy regexp to match request uri before right time
 				if ($this->empty_route)
 					$this->addRoute($this->empty_route['routeID'], $this->empty_route['rule'], $this->empty_route['controller'], Context::getContext()->language->id);
@@ -706,7 +709,7 @@ class DispatcherCore
 								$this->front_controller = self::FC_MODULE;
 							break;
 						}
-
+			}
 			if ($controller == 'index' || $this->request_uri == '/index.php')
 				$controller = $this->default_controller;
 			$this->controller = $controller;