Gitlab auto merge when build succeeds not working

Question

I have a quite simple question. We have setup Gitlab CI and want to allow auto merge as soon as the build succeeds for some of our branches.

Thing is, we see that the build passes, but the merge does not actually happen and the status stays at "to be merged automatically once the build succeeds".

Do you have any idea why?

I attached a screenshot of the bogus behaviour.

EDIT: Some additional information that was requested:

• It looks like no background job is put in the queue where I activate a "automatic merge when build succeeds
• When a build finishes running, no background jobs is triggered as far as I can see. Nothing new being scheduled, dead or in progress.
• I also don't see anything crazy or ERROR like in the logs.
• Two screenshots of my dashboard as a MR with an automated build runs :

Thanks, Julien

Answer 1

Maybe your merge job is scheduled or dead.

• Use your admin account and click the Admin Area button.

• Click Monitoring -> Background Jobs

• Then,click the dashboard and check the if your merge job is in the Scheduled queue or Dead queue.