I have also checked your family in a separate project and it seems to print fine. Either there is a problem with your project or there is an elemant which affects the visibility of the symbol in plan.
I´m just having the same problem.
whn I see in Monitor, the annotation symbols are there, but when I try to print, there aren´t..
Does anybody knows that´s happening?
It doesn´t happen in all views, only in two of the entire project..