{% block title %}

    {{ echo_block("page_title") }}
        <head>
            <h1>{{ title }}</h1>
        </head>
    {{ echo_endblock() }}
{% endblock %}

{% block title %}
    {{ echo_block("page_title") }}
        <head>
            <h1>{{ title }}</h1>
        </head>
    {{ echo_endblock() }}
    {{ echo_block("title") }}
        {{ echo_twig('parent()') }} - {{ title }}
    {{ echo_endblock() }}
{% endblock %}

Change the <title> of the browser with the title of admin
Change the <title> of the browser with the title of admin
