Fixed check if init owner selection of new ticket screen is empty.

app/models/ticket/screen_options.rb

@@ -103,7 +103,7 @@ returns
       agents[ user.id ] = 1
     }
 
-    dependencies = { :group_id => { '' => [] } }
+    dependencies = { :group_id => { '' => { :owner_id => [] } } }
     Group.where( :active => true ).each { |group|
       assets = group.assets(assets)
       dependencies[:group_id][group.id] = { :owner_id => [] }