In some e-mails that I receive content id's of inline attachments seem to be broken. When I load those e-mails using Rebex classes content id of LinkedResource is empty. Only ContentDisposition.Filename has value. When I look into eml file ContentId is there but it is some number that cannot be found anywhere inside eml - src=3D"cid:16c04ba2d614cff311". When I look at e-mail in Thunderbird I see that inline image is not displayed and in list of attachments I see the file that should be displayed there (with name same as ContentDisposition.Filename). All those e-mails are Re e-mails from gmail.
Is this some known scenario?