Impacted versions:
9.0 Community & 9.0 Enterprise

Steps to reproduce:
- Open up a V9 Enteprise Runbot
- Go to projects and open up the issues for the project 'Data Import/Export Plugin'
- Click on 'Create' to create a new issue. You will see the following form:
  ![image](https://cloud.githubusercontent.com/assets/6352350/13873556/8f826fbc-ecf2-11e5-95aa-e5cd7965b976.png)
  Notice how the Contact is filled in with the name 'Delta PC' and that no e-mail is filled in. When you open up this contact its form you will see he has an e-mail filled in:
  ![image](https://cloud.githubusercontent.com/assets/6352350/13873580/afd81f0a-ecf2-11e5-960f-91e14a999578.png)
- Remove the contact on the issue, click somewhere else and now fill in the contact again. The moment you add the contact again the onchange function goes off and the e-mail is filled in automatically:
  ![image](https://cloud.githubusercontent.com/assets/6352350/13873605/d0884068-ecf2-11e5-8892-5fcd0fc692b2.png)

Current behavior:
When clicking on 'Create' for creating a new issue on a project the customer its e-mail is not automatically filled in because the onchange does not seem to have an effect on the record.

Expected behavior:
When click on 'Create' for creating a new issue on a project the customer his e-mail is filled in automatically (provided there is one).

issue = self.read(cr, uid, [id], ['name'], context=context)[0]
        if not default:
            default = {}
        default = default.copy()
        default.update(name=_('%s (copy)') % (issue['name']))
        return super(project_issue, self).copy(cr, uid, id, default=default, context=context)
    def create(self, cr, uid, vals, context=None):
        context = dict(context or {})
        if vals.get('project_id') and not context.get('default_project_id'):
            context['default_project_id'] = vals.get('project_id')
        if vals.get('user_id') and not vals.get('date_open'):
            vals['date_open'] = fields.datetime.now()
        if 'stage_id' in vals:
            vals.update(self.onchange_stage_id(cr, uid, None, vals.get('stage_id'), context=context)['value'])
        # co
        create_context = dict(context, mail_create_nolog=True)
        return super(project_issue, self).create(cr, uid, vals, context=create_context)
    def write(self, cr, uid, ids, vals, context=None):
        # st
        if 'stage_id' in vals:
            vals.update(self.onchange_stage_id(cr, uid, ids, vals.get('stage_id'), context=context)['value'])
            vals['date_last_stage_update'] = fields.datetime.now()
            if 'kanban_state' not in vals:
                vals['kanban_state'] = 'normal'
        # us
        if vals.get('user_id') and 'date_open' not in vals:
            vals['date_open'] = fields.datetime.now()
        return super(project_issue, self).write(cr, uid, ids, vals, context)
    def onchange_task_id(self, cr, uid, ids, task_id, context=None):