My browser / operating system: Windows NT 10.0, Chrome 100.0.4896.88, No Flash version detected
I was looking at my project's 4-year-old comments, and I found a link to a project that my friend sent me. Unluckily, it was unshared, so I couldn't see it. However, when I tried opening it again, I saw the project for a millisecond, before it quickly switched back to the error screen.
Here was the link I clicked before the glitch happened:

What I saw for a millisecond and managed to screenshot:

What I saw immediately afterwards:

Apparently, this glitch works for every single unshared project.
This is very serious, as it can breach users' privacy.
Please tell me if this glitch is also appearing on your device.
Thanks for reading

It might be illegal to show.

It's a known bug with the API, and you can use things like https://llk.github.io/scratch-gui/develop/#<INSERT PROJECT ID HERE> or https://turbowarp.org/<INSERT PROJECT ID HERE>

You cannot see unshare projects because turbowarp is fixing updates not to do that again. but since your favorite scratchers that are famous have order projects are not shared on scratch. so that's how it goes. thanks for listening and reading this message. let's see if we can get unshare back(:

Mondayprojects wrote:

You cannot see unshare projects because turbowarp is fixing updates not to do that again. but since your favorite scratchers that are famous have order projects are not shared on scratch. so that's how it goes. thanks for listening and reading this message. let's see if we can get unshare back(:

This was back when the api changes weren't implemented, this is necroposting.