Shadow not showing in eevee

i have this problem that in a particular spot on a cell shaded ground/set shadow of an/any object is not casted, but if i move the said object to a different spot the shadow will be cast but there is seems to be a border that marks where it will show or not.

in the picture i provided, the objects on the left cast shadow on the ground, but the objects on the right is not

oh and i use eevee, if anyone has the solution please kindly help

Just a guess, but does this/these settings help.