[rt-users] Can't attach to an empty message

[Alain Sips]

In RT3.6.4 it seems that it is not possible to attach a file to a ticket 
if you leave the comment field empty.
Is this expected behavior? And if so, is there an easy way to go around 
this?

If you click comment on a ticket and you attach a file and leave the 
comment empty and press update Ticket, nothing is attached to the ticket 
(also no entry is found in the attachments table).

Thanks,

Alain