Do not cancel ajax call if widget is removed/closed.

app/assets/javascripts/app/controllers/clues.coffee

@@ -8,7 +8,7 @@ class Index extends App.Controller
     new App.FirstStepsClues(
       el: @el
       onComplete: =>
-        @ajax(
+        App.Ajax.request(
           id:          'preferences'
           type:        'PUT'
           url:         @apiPath + '/users/preferences'

test/browser_test_helper.rb

@@ -1626,6 +1626,7 @@ wait untill text in selector disabppears
         text = instance.find_elements(css: '.content.active .js-reset')[0].text
         if !text || text.empty?
           screenshot(browser: instance, comment: 'ticket_update_ok')
+          sleep 1
           return true
         end
       rescue