anchor.diff:  
         <%= ok_url_tag %>
         <%= f.submit class: "btn btn-primary" %>
  -      <%= cancel_button [@project, @task, @issue] %>
  +      <%= cancel_button [@project, @issue] %>
       <% end %>
     <% end %>
   </div>
  
positive.code:       <%= hidden_field_tag :issue_template_id, f.object.template.id %>
  
        <%= f.simple_fields_for :issue do |ff| %>
          <%= ff.input :task_id if f.object.task %>
          <%= ff.input :title %>
          <%= ff.input :creator_id, collection: @project.members, label_method: :name, input_html: { class: "select2-field" } %>
          <%= ff.input :content, input_html: { class: 'markdown-field' } %>
  
negative.code: <div class="page-header">
    <h2><%= page_i18n :new, model_name: h(@issue) %></h2>
  </div>
  
  <div class="container">
    <%= render 'select_template', template: @issue_build_form.template %>
  