Resolved merge request discussion is expanded without comments

Summary

For https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/17930 a resolved discussion is displayed expanded on the discussion tab but the corresponding comments are not visible. When switching to the changes tab, the discussion is collapsed (and when expanded comments are shown).

Steps to reproduce

I wasn't able to reproduce anywhere but https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/17930.

What is the current bug behavior?

Resolved discussion is expanded but comments are not visible:

Screen_Shot_2018-03-25_at_20.44.23

What is the expected correct behavior?

Same behavior as on the changes tab:

  • By default, resolved discussions are collapsed:

Screen_Shot_2018-03-25_at_20.45.50

  • When expanded manually, comments are shown:

Screen_Shot_2018-03-25_at_20.48.23