Originally posted by AdorableWolf:

I've seen yt tests and it was said benches, chairs and tables doesn't prevent spawn of mob. So I'm not sure to this one.

Well, so test yourself. I am mentioning what I have tested and saw it working, the bench prevents in the range of the white circle, because the fulings spawn was exactly the area where that specific destroyed bench was covering (the white circle of this bench was like 70% black forest and 30% plains).