User info is not being correctly shown in Jira when merging - is this possible?

I am looking to see if there is a way to show the user who merged into the Jira ticket. As you can see in the image below, the Author is shown as 'User' - is there a way around this?

No file, test, or entry point is named. Begin by reviewing the GitHub-for-Jira merge integration and the linked screenshot, then confirm whether this deprecated repository or its private successor owns the behavior. Done would be a documented answer or a reproducible fix that shows the merger rather than “User” in Jira.

Written by the indexing model from the issue text.