Graph API archive response for repeated sub-section only adds m_def to first item

I request a section that happens to have a repeated sub section in it. I use a request like this:

{
  m_request: {
    directive: 'plain',
    include_definition: 'both',
  },
  m_def: {
    m_request: {
      directive: 'plain',
    }
  }
}

The result is an object with an m_def and all properties, including my repeated sub-section. The repeated sub-section contains also all the sections, but on only the first of them has an m_def. I expect that they are all treated the same and that all of them have the respective m_def.

This is what i get as a response:

{
    "m_def": {
        "m_def": "metainfo/nomad_plugin_gui.schema_packages.exercise_schema/section_definitions/1"
    },
    "student_name": "Markus Scheidgen",
    "student_id": "151715",
    "notes": "...",
    "measurements": [
        {
            "m_def": {
                "m_def": "metainfo/nomad_plugin_gui.schema_packages.exercise_schema/section_definitions/0"
            },
            "voltage": 0.5,
            "current": 1.2
        },
        {
            "voltage": 1.0,
            "current": 2.12
        },
        {
            "voltage": 3.0,
            "current": 3.04
        },
        {
            "voltage": 4.0,
            "current": 4.01
        },
        {
            "voltage": 5.0,
            "current": 4.99
        }
    ]
}