#4 Wrong Evaluation of certain expressions

[Matthias Müller]

Example expression:

((?=.\d)(?=.[a-z])(?=.[A-Z])(?=.[@#$%]).{6,20})

(see http://www.mkyong.com/regular-expressions/how-to-validate-password-with-regular-expression/ for details about this expression)

Test-String: AAbb12&

This should not match because & is not an allowed character.

In Java,

"AAbb12&".matches("((?=.\d)(?=.[a-z])(?=.[A-Z])(?=.[@#$%]).{6,20})")

returns false (which is correct),
but QuickREx says the expression matches (see attached screenshot).