Hopefully none, because your staff will read the email and not click the button more than once.

Or one of them will do it, Benjamin will glare at them and they'll learn not to do it again and warn their coworkers about it.

Or... Benjamin will spend a ton of time on this and use that to successfully argue for the bug to get fixed.

(Or your organization is dysfunctional and ends up wasting a ton of money on time that could have been saved if the development team had fixed the bug.)