Why does my sections look as if the parts are merged?

Did I change a setting, if so I can't find it.

Appreciate any help.

Thanks

Top picture added to show how the section should look like.

I've checked all the view settings between the two computers and they are the same.

What am I missing?

Bad video card maybe?

Thanks again

The top picture was just added as you can see it looks correct.

It is from the same computer as the bottom picture.

The top picture is from SW 2018 and the bottom is from SW 2019.

The video card is not the problem it must be a setting change I'll keep looking.