I can’t seem to get the parameter list to show when I use a call message type between two lifelines. I setup the message to point to an operation of the ending lifeline’s class type, however, it shows up without parameters, i.e. send() instead of send(parameters). Even when I double-click on the item as if to edit the listing shows the correct signature with parameters and return type but when selected they disappear and only the empty signature remains.
Am I missing something?