Anyone else seeing clear-text credentials on their EBS volumes?

This is only showing up on our EBS volumes - nowhere else that I can tell.  Normally there's a drop-down to show us where the property was applied, but in this case, there isn't one.  As of right now, it appears at least 3 credentials are exposed.  This does not appear to be anything done by someone on our end.  I've got a ticket open to have someone investigate.