anchor.diff:                <input type="hidden" value="<%= params[:invitation_token] %>" id="invitation_token" name="invitation_token" />
   
                 <div class="Sessions-fieldsGroup">
  -                <% if @organization.auth_username_password_enabled %>
  +                <% if @organization.auth_username_password_enabled || duplicated_username_prompt? %>
                     <div class="Sessions-field">
                       <%= f.text_field :username, class: "CDB-Size-medium Sessions-input topBorderRadius", placeholder: 'Username' %>
                       <% if !@user.errors[:username].blank? %>
  
positive.code:                   </div>
  
                    <div class="Sessions-field">
                      <%= f.email_field :email, class: "CDB-Size-medium Sessions-input", placeholder: 'email', readonly: params[:invitation_token].present? %>
                      <% if !@user.errors[:email].blank? %>
                        <div class="Sessions-fieldError js-Sessions-fieldError" data-content="<%= @user.errors[:email] %>">!</div>
                      <% end %>
  
negative.code:                   </div>
                  <% end %>
  
                  <% if @organization.auth_username_password_enabled || duplicated_username_prompt? %>
                    <div class="Sessions-field">
                      <p>
                        <button type="submit" class="Sessions-submitButton js-Sessions-button js-Loading">
  