contact report lists contacts that have been 'soft' deleted (placed in Trash)

Just upgraded a site from 4.7.15 to 4.7.19. The upgrade went smoothly without error. The site uses a contact report, which simply lists contacts in a given group. This was working fine and used solely as a dashlet on the CiviCRM dashboard prior to the update. Post update, the report now includes contacts that have been 'soft' deleted, i.e. moved to the Trash. Consequently, the report is now useless.