Game view visual glitch, duplicating all objects in the scene

I am getting this weird visual glitch. It is only happening in the Game view. I have just built and ran this on an Android phone and no such glitch occurs.
111867-glitch.png

The only thing(s) I think MAY have affected is:

  • I recently removed a second camera I was using to rotate a skybox (the stars in the background), to make it look like the ships were moving.
  • I just cloned this repo from github, although I done this a week ago and it worked perfectly.

It happened when I removed the second camera. I had to change the remaining camera to Solid Colour and tag as MainCamera (on all my scenes).

Still not sure why that worked, but hey.

I have the same issue in Scene View after changing renderer pipeline to 2D
If somebody knows how to fix it please tell me