Wrong classes on status messages

Hi there,

when I have a status message following a warning message, the status message has also the warning class in it.
I think the problem is the attributes variable in the status-messages.html.twig which is not somehow reset for every loop in the for statement.

{% for type, messages in message_list %}
  {%
    set classes = [
      'messages',
      'messages--' ~ type,
    ]
  %}
  <div class="{{ attributes.addClass(classes).class }}" role="contentinfo" aria-label="{{ status_headings[type] }}">
    {% if type == 'error' %}
      <div role="alert">
    {% endif %}
      {% if status_headings[type] %}
        <h2 class="visually-hidden">{{ status_headings[type] }}</h2>
      {% endif %}

any ideas? where are the twig specialists?! :-)

greetings ifux