API `closes_issues` returns an empty list

Summary

API closes_issues returns an empty list if MR has closes issues

Steps to reproduce

  1. Create Issue
  2. Create MR from this issue This MR contains Closes #2 in description
  3. Check closes_issues api: https://gitlab.delisinfo.ru/api/v4/projects/53/merge_requests/142/closes_issues It returns empty list

What is the current bug behavior?

API closes_issues returns empty list if MR has closes issues

What is the expected correct behavior?

I expected it should return one issue which I were created

Relevant logs and/or screenshots

issue mr api