Fixes #2640 - Signup view broken after logout.

app/assets/javascripts/app/lib/app_post/auth.coffee

@@ -163,8 +163,10 @@ class App.Auth
     App.Event.trigger('auth')
     App.Event.trigger('auth:logout')
     if rerender
-      window.location.href = '#login'
+      @loginCheck(->
-      App.Event.trigger('ui:rerender')
+        window.location.href = '#login'
+        App.Event.trigger('ui:rerender')
+      )
     App.Event.trigger('clearStore')
 
   @_loginError: ->

spec/system/basic/authentication_spec.rb

@@ -15,4 +15,14 @@ RSpec.describe 'Authentication', type: :system do
     logout
     expect_current_route 'login', wait: 2
   end
+
+  it 'will unset user attributes after logout' do
+    logout
+    expect_current_route 'login', wait: 2
+
+    visit '/#signup'
+
+    # check wrong displayed fields in registration form after logout. #2989
+    page.should_not have_selector('select[name=organization_id]')
+  end
 end