Redmine

When making a project copy by going to /redmine/projects/template/copy custom field check boxes on the new project form are not set, all are unchecked. After project copy all custom field values are lost.

Copy the defect #20360 for the release 2.6.5 where I have the same issue.

Env:

Environment:
  Redmine version                2.6.5.stable
  Ruby version                   2.1.6-p336 (2015-04-13) [x86_64-linux]
  Rails version                  3.2.21
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.6.11
  Git                            1.7.1
  Filesystem                     
Redmine plugins:
  no plugin installed