Wrong shadow and how to fix it?

Hi, everyone:
When I use shadow generator to create shadow, I have following problem.

What I mark on the picture, I think, there should be some shadow on it.

Hi @Zcating

It looks like the shadow is not using the right depth range to generate the shadow. Can you tweaks light.shadowMinZ and light.shadowMaxZ values also check shadowGenerator.bias

There is a troubleshooting section in Shadows - Babylon.js Documentation

If you still have an issue, can you please provide a playground?