We are using S4B online.
We recently observed the missed conversation in skype for business is showing incorrect email adress with unidentified format.
Missed conversation Subject line Sample :
Missed conference with Karthik Sundara (SEIT), email@example.com, Moorthy Urkavala (SEIT), firstname.lastname@example.org
Do we have any idea why its happening and we observed in recent days that is happening for group chat and occuring more users.