Fix form spec

app/views/shared/issuable/form/_metadata_issue_assignee.html.haml

@@ -7,5 +7,5 @@
     - if issuable.assignees.length === 0
       = hidden_field_tag "#{issuable.to_ability_name}[assignee_ids][]", 0, id: nil, data: { meta: '' }
 
-    = dropdown_tag(users_dropdown_label(issuable.assignees), options: issue_dropdown_options(issuable,false))
+    = dropdown_tag(users_dropdown_label(issuable.assignees), options: issue_dropdown_options(issuable,true))
   = link_to 'Assign to me', '#', class: "assign-to-me-link #{'hide' if issuable.assignees.include?(current_user)}"