Sorting by position on product search via REST API does not work

[mack4hack]

Preconditions

1. Magento 2.4-develop
2. Magento 2.3.3
3. Vanilla Install

Steps to reproduce

1. Allow Anonymous Guest Access
   From : Stores -> Configuration -> Services -> Magento Web API -> Web API Security

2. Assign position value to products
   from : Catalog -> Categories -> Select Category -> Products in Category

3. Hit this endpoint:
   GET : <domain name>/rest/V1/products/?searchCriteria[filterGroups][0][filters][0][field]= category_id&searchCriteria[filterGroups][0][filters][0][value]=3&searchCriteria[sortOrders][0][field]= position&searchCriteria[sortOrders][0][direction]=ASC&searchCriteria[pageSize]=5

Expected result ✔️

The product's list should be sorted by "position" parameter

Actual result: ✖️

The product's list is not sorted by the "position" parameter

Search Criteria, as returned in the response

"search_criteria": {
    "filter_groups": [
      {
        "filters": [
          {
            "field": "category_id",
            "value": "3",
            "condition_type": "eq"
          }
        ]
      }
    ],
    "sort_orders": [
      {
        "field": "position",
        "direction": "ASC"
      }
    ],
    "page_size": 5
  }

---

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

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[m2-assistant]

Hi @engcom-Alfa. Thank you for working on this issue.
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[magento-engcom-team]

✅ Confirmed by @engcom-Alfa
Thank you for verifying the issue. Based on the provided information internal tickets MC-40344 were created

Issue Available: @engcom-Alfa, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.