Custom Theme Can’t Load Default Overview

Summary

Using a custom theme that does not override the space homepage results in a status 404 and does not load the page.

Steps to Reproduce

1. Follow https://developer.atlassian.com/cloud/confluence/create-a-confluence-theme/
2. Set routeOverride to false
3. Use the theme

Expected Results

Default overview

Actual Results

Endless spinner is shown with a status 404 in the dev console. The route to spaceview is still being checked.

Notes

Raised in https://community.developer.atlassian.com/t/custom-theme-cant-load-default-overview/26874