GitLab API - closed_at field incorrectly reported as null for closed issues [only for issues imported from github.com]

Description of the problem

I'm in the process of evaluting porting Yoda (issue based agile project management based on github issues) to support as well gitlab. I think this will be a cool feature :-)

However, already on day 1, I've encountered the first problem. The API (v4) does not report the time stamp for closed issues. It is always null (for issues both in "opened" and "closed" states).

Which Group/Project (with full path) is experiencing the issue?

I do

https://gitlab.com/api/v4/projects/git-jens%2Fyoda-demo/issues?page=5

and get back the following: NOTE the state ("closed") and the incorrect closed_at timestampt (null). See also image.

0 id 9564440 iid 73 project_id 5652104 title "Problem entering new data on Mondays." description "Created by: jens-markussen\n\n

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\r\n\n> estimate 1\n" state "closed" created_at "2018-01-11T10:38:12.000Z" updated_at "2018-01-11T10:39:37.000Z" closed_at null labels 0 "S1 - Urgent" 1 "T1 - Defect" milestone null assignees [] author id 210988 name "Jens Vedel Markussen" username "git-jens" state "active" avatar_url "https://assets.gitlab-static.net/uploads/-/system/user/avatar/210988/Jens_Vedel_Markussen.jpg" web_url "https://gitlab.com/git-jens" assignee null user_notes_count 0 upvotes 0

Approximate date/time when the error occurred.

2018-03-05 20:45 CET.

Describe what you were doing right before the issue occurred.

Not relevant.