Per comments #6, #7, and #8, the code that generates the duplicate notification email should check whether the recipient's account has access to the original bug.
I still can't see the master bug report for my bug, despite that mine is now public. This decreases the number of people who can potentially fix any given issue, not to mention all the problems already listed, like the wasted effort of reporting bugs that already exist in the system.
Per comments #6, #7, and #8, the code that generates the duplicate notification email should check whether the recipient's account has access to the original bug.
I still can't see the master bug report for my bug, despite that mine is now public. This decreases the number of people who can potentially fix any given issue, not to mention all the problems already listed, like the wasted effort of reporting bugs that already exist in the system.