Cannot create new countermeasure

[awinograd]

{
"status": 400,
"title": "Bad request",
"detail": "One or more parameters have invalid values.",
"type": "MethodArgumentError",
"traceId": "5db9debc-208d-43e4-94fc-d8d14702afe2",
"errors": [
{
"field": "countermeasure-id",
"type": "InvalidProperty",
"message": "Property [countermeasure-id] with value [null] is invalid"
}
]
}

I get the above error response when clicking "create" even if the ID is filled out

Looks like only the countermeasure status is being sent in the post body