When working with technical tickets in CP UserCenter, you have to enter new posts in the field represented by the light-grey text Share an update...
Waiting for a response to an update, i had a look inside the ticket and found see that the last update had been entered in Customer Reference instead ! What that means ? This is internal customer information that anyone can see who has enough rights in this UserCenter. But intentionally, CP will not see it...
I had made the mistake some days before myself, but realized that something was different and corrected the mistake.
A customer reference field is highly appreciated, but maybe put it somewhere else with no danger of mixups ?
CCSP - CCSE / CCTE / CTPS / CCME / CCSM Elite / SMB Specialist