Index: app/models/issue.rb
===================================================================
--- app/models/issue.rb (revision 11108)
+++ app/models/issue.rb (working copy)
@@ -855,7 +855,7 @@

   # Returns a string of css classes that apply to the issue
   def css_classes
-    s = "issue status-#{status_id} priority-#{priority_id}"
+    s = "issue status-#{self.status.position} priority-#{self.priority.position}"
     s << ' closed' if closed?
     s << ' overdue' if overdue?
     s << ' child' if child?