Hi Paul,
firstly, please provide exact steps where and how this happens, both in 8.4 and 8.5 i can't get 2 links, it's always only 1 >> to created email. No queue.
Secondly, GDPR breach is if you access data you should not, meaning ordinary users should not even have rights to see email queue or you are using persons data without their permission.
Regards,
Tomas