When rendering another controller from the view, master request gets lost - this means that, for example, GET parameters will not be available in that rendered (included) controller.
What is the way to access the query string in rendered controllers, except accessing $_GET directly (this works).
I've found some legacy code in the project which does the thing, but it's deprecated in 2.4 and will be removed in 3.0 already:
RequestStack you can get the master request
The request as a service is deprecated
$this->container->get('request'), but this stack replaced it.