CC'd Recipients Broken in 12.8.7

slips121

We just noticed that CC'd recipients of a ticket are not actually CC'd on outgoing emails as of 12.8.7.

To reproduce:

1. Create ticket
2. Add recipient to CC
3. Ensure CC box is checked
4. Save and Email
5. Review Outgoing emails (Setup > E-Mail > Outgoing Mail Accounts > E-Mail history)
6. Look at the processed E-Mail Message Header (Cc is blank).
7. Download the email and see the email header also has no one in CC, yet the bottom of the email clearly shows Recipients including ticket client AND CC'd recipients.

Wasn't sure if someone already submitted a bug report or if this was specific to just us, so wanted to confirm here first.

Thanks

slips121

Just to add-on after more testing...
If Client box is unchecked, Client-Defined CC WON'T receive emails either.