I have been using Wireshark v1.8.15 to view Bcc data in mmse packets and they are displayed without any issues. When I try to do the same using v2.6.1 all that is displayed under MMS Message Encapsulation is "X-Mms-Message-Type: m-send-req (0x80). In v1.8.15 additional fields are displayed like X-Mms-Transaction-ID, X-Mms-MMS-Version and Bcc.
I'm hoping that it is just an adjustment to a filter or display as according to the Display Filter Reference, Mmse.bcc is still content that should be displayed.
I appreciate any assistance you can provide.