Swagger filtered GET returns multiple Users/AnyObjects instead of one

The bug has been reproduced locally with a Syncope 3.0.5 clean archetype using PGJSONB .
Basically, if there are 2 users with one email address that contains the other, the GET on Swagger filtered with the fiql expression returns both users. In particular:

2 users have been created created on Syncope:

The value "utente.uno@email.it" has been assigned to user1 email
The value "dueutente.uno@email.it" has been assigned to user2 email

Then, the GET /users has been executed on Swagger with the fiql expression "email==utente.uno@email.it" and it returned both users.

On the actual project instead, the problem was found in the same way, but with the attribute email of an AnyObject, with the GET /anyObjects, filtered with AnyObject type and email value