@Jim M User shouldn’t be able to create duplicate accounts, or accounts with the same email, so why is the core_members email column not UNIQUE? While there may be an issue with my Steam app, like you, I can’t reproduce it. But it wouldn’t be an issue if the table was set up, IMO, properly.
Sticking with car analogies, it IS Fords fault if they let the buyer pick their own serial # as part of the purchase process. You’re bound to run into buyers that pick the same thing. The DMV wouldn’t accept it.
Board owners being the DMV, is it acceptable?