Redmine

When the assignee is set as a mandatory field, the auto-assign function related to category does not work.

Test setting:

Category definition:

Attempt to create issue:

If the assignee requirement is removed, the assignee is set as expected after a category has been chosen and the issue has been created.

Environment:
  Redmine version                3.3.0.stable
  Ruby version                   2.1.8-p440 (2015-12-16) [i386-mingw32]
  Rails version                  4.2.6
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.8.16
  Git                            2.7.4
  Filesystem                     
Redmine plugins:
  no plugin installed