I have observed unexpected behavior for isusernametaken function. When we pass a

I have observed unexpected behavior for isusernametaken function. When we pass an empty string to it, it returns true.
As per my understanding this should not be the case. isusernametaken should return true for only the users which exist (activated/deactivated) in the system. This was observed on Appian 7.11
fn!isusernametaken("") - true

OriginalPostID-205763

OriginalPostID-205763