Removed attachments still being sent in Outlook 2016 using Adobe Send & Track addin

A couple users have reported a bug in Outlook 2016 that when removing an attachment that they have improperly or mistakenly added --a PDF for example--in a composed Outlook email and still send the email that the removed attachment is still sent. The Adobe Send & Track add-in for Outlook seems to be the culprit as when disabling this add-in this issue no longer occurs. Any other users experiencing this using Outlook 2016 and Adobe Acrobat DC?