Shadow problem


I scratch my head since few weeks now. I can’t seem to figure out what is happening with my shadows.

I’ve got that fading thing at the contact point of a object on the floor and i can’t get rid of this.

I’ve also tried to put a new directional light with default setting and it gave me the same kind of result.

I tried a new blank level and the problem is not there anymore . Then i tried the same setting of the new level to my original level and I’ve got the same problem as well.

Maybe it’s a bug or maybe there something I’ve missed ?

By the way the entire shadow of the level hitting others object is acting this way.