Commits wrongly attributed on a project activity list

Summary

When displaying a given private project on a server where I am administrator, almost all of the owner commits displayed in "Activity" have me as the author. By displaying those commits, the real author name and picture is displayed. The username and email are also correct when the project is cloned. The only inconsistent page is /user/project/activity.

Steps to reproduce

Hard to say, it's only on one project for now, other users didn't notify me of anything.

Example Project

It is private and on my server.

What is the current bug behavior?

The profile picture, full name, and username, are wrong on the project Activity page. It is (for now) the only place where it happens.

What is the expected correct behavior?

The commits should be attributed to the correct author.

Relevant logs and/or screenshots

Version

13.3.0-ee (4922d272)