XF 2.1 If you try to change your email address to the email of another forum user you get a generic error with no useful feedback

[RobinHood]

 

[Chris D]

I think you might have an add-on or customisation at play here.

I just tried to change my email here and got the expected message:

 

[RobinHood]

Confirmed, it was an add on that I didn't think would have anything to do with that feature. Thanks