fixed issue assignee spec

spec/features/issues_spec.rb

@@ -469,6 +469,8 @@ describe 'Issues', feature: true do
           click_link 'Edit'
           click_link @user.name
 
+          find('.dropdown-menu-toggle').click
+
           page.within '.value .author' do
             expect(page).to have_content @user.name
           end
@@ -476,6 +478,8 @@ describe 'Issues', feature: true do
           click_link 'Edit'
           click_link @user.name
 
+          find('.dropdown-menu-toggle').click
+
           page.within '.value .assign-yourself' do
             expect(page).to have_content "No assignee"
           end