Coverage visualization not displayed until the cobertura file is opened

Summary

I can't see the coverage visualization in MR unless I open the cobertura-coverage.xml file in the job artifact.

Steps to reproduce

• Open a MR with some code changes
• Let the pipeline run
• Check the changes, no inline coverage visualization
• Open cobertura-coverage.xml in the artifact of the test job
• Go back to the MR changes and inline coverage visualization is there

Example Project

I followed the doc to make sure that everything was setup correctly and I can see that the file has been found and uploaded as an artifact in the logs.

I had the same behavior in both edge and chrome.

@klaasdellschaft created an example repo here: https://gitlab.com/klaasdellschaft/inlince-code-coverage/-/merge_requests/1

What is the current bug behavior?

Code coverage visualization in MR is not displayed unless the cobertura-coverage.xml file in the job artifact was opened.

What is the expected correct behavior?

Code coverage visualization in MR should be displayed once the test job ran.

Relevant logs and/or screenshots

I can see in the job's log that the cobertura-coverage.xml file has been uploaded as an artifact:

Uploading artifacts as "cobertura" to coordinator... ok  id=1557118017 responseStatus=201 Created token=DmY-c3so

Check this comment for more details found by @klaasdellschaft

Results of GitLab environment info

@u117959 could give you more info about the Gitlab environment if needed.