[Pmwiki-users] ?action=crypt returns different hashes for the same password

[Leo]

I just noticed that if I continue clicking on "Submit Query" button in
?action=crypt form, the corresponding encrypted text (the hash) keeps
changing.
Which one of those hashes should I use in my $DefaultPasswords['type'] settings?

Is it a bug or an enhanced security feature like some kind of random
"salt" value that leads to changing encrypted text?

--Leo--