Scheduled reminders: if 'Also include' and 'Choose recipients' is selected, and no recipients are entered - reminder is sent to all contacts

In my testing (dgg), I created a 'memberships' reminder, selected 'Also include' and 'Choose recipients'. Then left the Manual Recipients field empty.

Result was 202 records in the action_log. In my case (4.5 git checkout ) emails were not actually sent out - instead a fatal DB error was thrown. However - we should definitely NOT be sending any additional reminders OR creating action_log entries in this condition. (screenshot attached)

— original post —
It would be helpful to Civi admins if, when selecting "Also include" and "Choose recipients" in the recipients configuration, to not allow an empty list. Otherwise, reminder emails are sent to ALL contacts.

Ideally, it would be a validation error or warning. But if this isn't possible, could the help popup and documentation reflect this?

I asked about this on this forum thread, and at least one other person has run into this issue: http://forum.civicrm.org/index.php/topic,34527.0.html

Let me know if you need any other information. Thanks!