[-] BO : fixed #PSCFV-3043 - can't active language in BO

classes/Dispatcher.php

@@ -221,7 +221,8 @@ class DispatcherCore
 		
 		$this->setRequestUri();
 
-		// Switch language if needed
+		// Switch language if needed (only on front)
+		if ($this->front_controller == self::FC_FRONT)
 			Tools::switchLanguage();
 
 		$this->loadRoutes();