Restricting profile by Group can disable one or all Drupal user/XXX pages on a site

Hi there, thanks for looking. Currently reproduced on demo site a bug which although is a possible misconfiguration of CiviCRM, does result in a rather serious public bug, disabling user/XXX pages on a site and sending all users attempting to view their "my account" page to homepage.

profile: testing stoob (#6)
contains non-custom individual data
profile is restricted to show only members of a group: Stoob testing (#15)
profile properties are configured to show up on add/edit user account

civicrm contact: jdoe@gmail.com is NOT a member of the above group "Stoob testing" #15

behold, http://drupal.demo.civicrm.org/user/2 (jdoe@email.com) doesn't work as a page any longer, and is simply redirected to the website homepage http://drupal.demo.civicrm.org/user/2/edit works and the user is able to edit the profile data

Suggestion: This error could cause an unwitting user to disable one (or perhaps all!) user pages for a Drupal site based on a misconfiguration or misunderstanding of the CiviCRM Group restriction of a profile. Either enhanced functionality to only show profile would be appropriate, or at least perhaps this error should be handled more gracefully, and not disable the entire Drupal user page