Batch input validation not working as expected

Version Information

Server Version: v2.33.4
CLI Version (for CLI related issue):

Environment

Local Docker

What is the current behaviour?

When inserting batch objects only the first one gets validated:

mutation InsertUsers($users: [users_insert_input!]!) {
  insert_users(
    objects: $users
  ) {
    affected_rows
    returning {
      full_name
      phone_numbers {
        number
      }
    }
  }
}

Here below it fails as expected as the first number is not valid

{
  "users": [
    {
      "imported_id": "1247775",
      "first_name": "Pozzi",
      "last_name": "",
      "emails": {
        "data": [
          {
            "email": "mariefoti@bluewin.ch"
          }
        ]
      },
      "phone_numbers": {
        "data": [
         
          {
            "number": "764881022",
            "primary": true
          },
          {
            "number": "+41700081022",
            "primary": true
          }
        ]
      },
      "language": "fr",
      "home_address_route": "",
      "home_address_postcode": "",
      "home_address_locality": "",
      "home_address_country_code": ""
    }
  ]
}

Here below it passes with not errors and inserts both numbers in the db. The second one bypasses validation

If I insert more than 1 user in only validate 1st number of 1st user

{
  "users": [
    {
      "imported_id": "1247775",
      "first_name": "Pozzi",
      "last_name": "",
      "emails": {
        "data": [
          {
            "email": "mariefoti@bluewin.ch"
          }
        ]
      },
      "phone_numbers": {
        "data": [
          {
            "number": "+41700081022",
            "primary": true
          },
          {
            "number": "764881022",
            "primary": true
          },
        ]
      },
      "language": "fr",
      "home_address_route": "",
      "home_address_postcode": "",
      "home_address_locality": "",
      "home_address_country_code": ""
    }
  ]
}

What is the expected behaviour?

It should validate all phone numbers

How to reproduce the issue?

1. create an input validation
2. try inserting n+1 objects

Screenshots or Screencast

Please provide any traces or logs that could help here.

Any possible solutions/workarounds you're aware of?

Keywords

Start by reproducing the insert_users mutation with multiple users and nested phone_numbers, following the two payload examples in the issue. Trace the input-validation path for batch inserts and compare which phone-number entries are checked. Done means every phone number in every inserted object is validated and invalid values are rejected.