Environment Card keeps changing 'Screen' to 'spherical'


I have a project and I would like to render each camera with a different background image, in a similar way to the ‘Background’ card in Scene Manager which only changes the background of the viewport.

When using the environment card, I can load in the different images to use as rendered backgrounds but it changes the ‘screen’ setting to ‘Spherical Environment’.

I have tried attaching the image to a ‘color correction’ map in the hope that it might act as a ‘barrier’, but no luck.

Is there a way to keep the screen setting?