Losing my Paperbackround while using Realistic Visual Style in Layout Viewport

When i have 3D Objects and want to make a Layout for printing I am losing the white Paper(background) when I use Realistic Style (high quality - with materials) in Paperspace Viewport.

When i Use just conceptual Style (Schattiert) all works good but when I want to switch to realistic Style in one viewport so the background of Layout becomes just grey and i do not have my paperspace anymore.

I attached 2 pictures:

Bild 1 is shown normal - Bild 2 shows result when i switch to realistic style.

Is there any known issue?