Issue Summary

Editing multiple spaces throws 404 error in the global permissions guest tab

Steps to Reproduce

1. Invite a user as a guest
2. add  the user to the group that provides access to Confluence as standard User (e.g. confluence-users-<INSTANCE_NAME>)
3. Enter the global permissions guest tab at the URL https://<INSTANCE_NAME>atlassian.net/wiki/admin/permissions/global?tab=external
4. the user will have access to "Multiple spaces"
5. click on ... >> "Edit spaces"

Expected Results

The site admin will see the spaces to which the user has access to

Actual Results

The following error is shown:

•  "We couldn't find what you're looking for"
• "We looked everywhere, but it doesn't exist. It may have been deleted. Unless, of course, the URL has a typo in it"

Workaround

The only workaround is to select Remove all spaces and then reassign the guest to the desired space