Failure in ee/api/2_plan/epics_milestone_dates_spec.rb | Plan Epics milestone dates API updates epic dates when removing issue

Test metadata (don't modify)

Field	Value
File	qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb
Description	Plan Epics milestone dates API updates epic dates when removing issue
Hash	c2c8a714fee516af92576e737be6bb9fd26dda43df77bd1ba0480a1d8df07348

Stack trace

Failure/Error: expect(epic.start_date_fixed).to eq(fixed_start_date)

  expected: "2023-05-30"
       got: nil

  (compared using ==)

First happened in https://gitlab.com/gitlab-org/gitlab/-/jobs/4370750514.

Related test case: https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/347957.