I am logged into C5 as the super user. When I go to Search Users and tick the box next to a number of users and use the dropdown menu "With Selected" to select Delete - I am presented with a dialog box titled "Delete" that says,

"Users you don't have permission to bulk-delete have been removed from this list."

and no user is listed.

When I hit the Delete button, I am presented with a notice that those users were deleted. From there, when I attempt to go anywhere in the dash, I am forwarded to the login page with this message,

"This user is inactive. Please contact us regarding this account."

Basically, I have been logged out.

HOWEVER - I can can delete any user by going to Search Users, clicking on their username link, and deleting from that pane.