Different homepage depending on login status for public wiki-only projects

Summary

The front-page of a wiki-only project is not the same for logged-in and non-logged users.

Steps to reproduce

Create a public project
In the settings under Permissions, disable everything except Wiki
Create a wiki homepage in the project

Example Project

https://gitlab.com/ryancey/issue-wikiproject

What is the current bug behavior?

A different project homepage is displayed depending on the login status :

For logged in users, the wiki homepage is displayed as the project homepage.
For non-logged users, the activity feed is displayed as the project homepage.

What is the expected correct behavior?

The same homepage should be displayed for every users, in this case the wiki homepage.

Relevant logs and/or screenshots

Logged-in users (should be the correct behavior)

Non-logged users