fix

vendor/built_in_modules/survey/app/models/survey.rb

@@ -58,7 +58,7 @@ class Survey
   end
 
   def write
-    if self.deadline || Time.now < self.deadline
+    if self.deadline && Time.now < self.deadline
       ('<a href="' + Rails.application.routes.url_helpers.panel_survey_front_end_survey_path(self) + '"><img src="/assets/write.png" /></a>').html_safe
     else
       ''