There was no indication that any info was even sent to the user, for all he knows all was fine (and still is) just unresolved. He did his job and reported the bug in detail, oracle needs to do their job and reach out to him. Can it be reproduced? More info needed? Etc. You don't ask for test cases unless its really problematic or the dev can't figure out whats wrong in your opinion.
Most bug-trackers automatically send notices if the user has put in valid contact info. If they didn't, or opted out of the notices, then they'll see the message when they check it for updates.
If they never check it again, time is definitely better spent somewhere else.
