Phantom sphere can't be deleted

Hey there I have this phantom sphere that doesn’t appear in the viewport (even in wireframe mode) and i can’t find it in the World Outliner, yet when I play the Standalone Player (to render 360 images) the sphere appears.

Here’s looking through a camera…

https://forums.unrealengine.com/filedata/fetch?filedataid=158870&type=thumb

Here’s a wireframe view…

https://forums.unrealengine.com/filedata/fetch?filedataid=158872&type=thumb

And here’s when viewing through the Standalone Player…

https://forums.unrealengine.com/filedata/fetch?filedataid=158871&type=thumb

Am I missing something?

Thanks in advance.