Placeholder field not populating rendered input

[Pringels]

Expected Behaviour

The placeholder field on the Form Field admin page should populate the rendered input's placeholder attribute.

Observed Behaviour

The rendered input's placeholder attribute is populated with the label field instead of the placeholder field

Rendered markup

<div class="Form-item Field CharField ">
    Label text
    <div class="Field-item"> 
        <input class=" TextInput" 
               id="id_feedback-form-site-feature" 
               name="feedback-form-site-feature"     
               placeholder="Label text" 
               type="text" 
               aria-invalid="false">
    </div>
    <div class="Field-message"></div>
</div>

Screenshot