I must confirm.
(That's one more thing that's bothering me: even after
pkg install openjdk8 back, I can't start NetBeans IDE successfully. Maybe it's something related to JFX. When I get more information, I'll come back here. I'm stuck with April STABLE update so far.)
Edit: For no apparent reason, NetBeans started working fine in this June STABLE updated boot environment yesterday evening. Now I'm going to install the missing pieces and try to work here from now on.