I can see project pages for projects that are unshared or don't exist

I just found out that you can visit the project page of a project that is private. Here's an example (@bh, is it ok if I use this as an example?)


But you still can't view projects that don't exist

The first link should go to the same 404 error page as the second link.

she didn't share her project. so the project is public.