Creating a CiviEvent with a online registration page and no input on "send confirmation" mail is troublesome

When creating a civiEvent with an online registration page but no input on whether to send a confirmation mail or not leads to an crash when trying to register.

drupal/sites/all/modules/civicrm/CRM/Core/Error.php, backtrace, 258
drupal/sites/all/modules/civicrm/packages/Net/SMTP.php, fatal, 279
drupal/sites/all/modules/civicrm/packages/Net/SMTP.php, _parseResponse, 716
drupal/sites/all/modules/civicrm/packages/Mail/smtp.php, mailFrom, 275
drupal/sites/all/modules/civicrm/CRM/Utils/Mail.php, send, 158
drupal/sites/all/modules/civicrm/CRM/Event/BAO/EventPage.php, send, 171
drupal/sites/all/modules/civicrm/CRM/Event/Form/Registration.php, sendMail, 526
drupal/sites/all/modules/civicrm/CRM/Event/Form/Registration/Register.php, confirmPostProcess, 451
drupal/sites/all/modules/civicrm/CRM/Core/StateMachine.php, postProcess, 166
drupal/sites/all/modules/civicrm/CRM/Core/QuickForm/Action/Next.php, perform, 63
drupal/sites/all/modules/civicrm/packages/HTML/QuickForm/Controller.php, perform, 195
drupal/sites/all/modules/civicrm/packages/HTML/QuickForm/Page.php, handle, 95
drupal/sites/all/modules/civicrm/CRM/Core/Controller.php, handle, 223
drupal/sites/all/modules/civicrm/CRM/Event/Invoke.php, run, 100
drupal/sites/all/modules/civicrm/CRM/Core/Component.php, main, 130
drupal/sites/all/modules/civicrm/CRM/Core/Invoke.php, invoke, 158
drupal/sites/all/modules/civicrm/drupal/civicrm.module, invoke, 329
, civicrm_invoke,
drupal/includes/menu.inc, call_user_func_array, 418
drupal/index.php, menu_execute_active_handler, 15

I think the Yes/No options should have a shown default value and not a "not selected" which is internally interpreted as "Yes". If you don't select "Yes" or "No" the needed "from" field isn't marked as a requirement and can therefore be left blank => error when registering.