"World position offset" Causing weird black shadow in foliage when using RTX render.

I am using unreal 4.25, with rtx render enable for my level.
When using foliage with the material property of “World position offset”, it causing weird shadow.

When “world position offset” is disconnected

When “world position offset” is connected

Here is a video demostration

Update: I found the solution also made a video so that no one have to waste their time for it

When I use foliage,no RayRrace menu, can’t Turn on evaluate World position offset.
Just World outliner can find this .

This works for static mesh actors well, but not on foliage. As OP has shown in the picture below, this option is not available on Foliage actor. Does anyone found a proper solution to this problem?