Inconsistency in validation

[EduardoLeite96]

I detected a possible problem in the validation from the "unique" rule, for inserting and updating records.

"Unique" validation does not work for fields that contain only numbers. I have a field called "cpf" that contains up to 11 numeric digits and the "unique" validation doesn't validate correctly.

Validation works for email, as I've already tested it, however it doesn't work for this specific field that contains only numbers.

$validator = Validator::make($request->all(),
[
'modalCadastrarNome'=>'required|regex:/^[a-zA-ZÀ-ú0-9-. ]{5,60}+$/i',
'modalCadastrarCpf'=>'required|cpf|unique:clientes,cpf',
'modalCadastrarEmail'=>'required|email|unique:clientes,email',
]);

Example of a CPF: 607.437.910-61 (no dots or dashes, just numbers).

I'm not sure but in an older version of Laravel this same validation didn't give this problem.

Laravel version: 8.54.
PHP version: 8.
Database: MySQL8