Select more than 8 messages, click "Forward" button or choose Message > Forward as > Attachment, only 8 messages are attached, and no warning or explanation is given. Best behavior would be like Communicator 4.7 (I never experienced a limit); otherwise, an error message should explain the limit.
This is related to, but not a duplicate of, bugs 57604 and 84131.
confirming... This is the current behavior.
*** This bug has been marked as a duplicate of 156146 ***