I got a problem that when migrating from version 3.x to 4.1, and similar problem didnt solved yet when upgrade to 4.5. its look like users full name disappeared and replaced with "\"
To: Norhisyam Dasuki; Noorajla bin Abdul Jalil; \; Suhaila Bte Yusof
and when more address
To: Saiful Rizal bin Abd Jabar; \; \; \; Mohd Azri bin Akhiak; \; \; \; \; Mohd Faizal bin Mohd Sudin; \; Mohd Nor Na'iim B. Nor Faiz; \; Nazrim Bin Tan; \; \; Mohd Hanafe bin Hashim; \; \; \; \; \; Mohd Hafez bin Mohd Khalid; \; \; \; \; Noor Sulaizah Sulaiman; Abdul Jabar B. Ismail
the back slash "\" still got mail address when we point mouse there.
user still received email but this error make some problem to me