Error in sorting users when using Portuguese as language

In http://folio-testing.aws.indexdata.com , when I change language to portuguese (Brazil), list users in Users App and click to sort by name, the system return an error. This is not occurs when I try the same with english as a language.

CB: I was also able to repro this with German as selected language. I changed to German locale, then went to Users app ans sorted by Name and Barcode without issues, but when I sorted by Benutzername, I got the same error reported by Tiago