Add js-extras so show any and show no for milestones show up.

app/views/shared/issuable/_milestone_dropdown.html.haml

 - if params[:milestone_title]
   = hidden_field_tag(:milestone_title, params[:milestone_title])
-= dropdown_tag(h(params[:milestone_title].presence || "Milestone"), options: { title: "Filter by milestone", toggle_class: 'js-milestone-select js-filter-submit', filter: true, dropdown_class: "dropdown-menu-selectable",
+= dropdown_tag(h(params[:milestone_title].presence || "Milestone"), options: { title: "Filter by milestone", toggle_class: 'js-milestone-select js-filter-submit js-extra-options', filter: true, dropdown_class: "dropdown-menu-selectable",
   placeholder: "Search milestones", footer_content: @project.present?, data: { show_no: true, show_any: true, field_name: "milestone_title", selected: params[:milestone_title], project_id: @project.try(:id), milestones: milestones_filter_dropdown_path, default_label: "Milestone" } }) do
   - if @project
     %ul.dropdown-footer-list