[HugoL]

Kindly tell how to set right corner Fanart background from Home widgets  back to older default ( without diffuse ) ?

No. That would be terrible. You need a diffuse mask. If you want the old version, that’s a different story but you can’t do without, it would look awful.

Also, your setup with clearart landscape looks weird. The idea behind clearart is that it goes over a background image. When your background is just black, it really doesn’t work well at all!