Shadow problem when ground plane has Z axis value = 0

Armory Engine General
1

Here is the video

2

it seems to me that this is a problem of low quality of shadows, caused by a large angle of the projection to the plane.
Try to improve the quality of shadows or place a light source higher

3

I dont think so because in that video I even pull the plane up, closer to the box and light source and it become clearer

4

Adjusting the light shadow bias migh help on that