Sorry, my English isn't so good.

So here's the thing. Recently when I'm using shaders after updating the mod, I found there were some strange shadows on the ground, which seemed to be caused by the lighting effect of the sun and the rendering process of blocks of the Create.

The picture below is why I think it's related to your mod.

The shadow in the picture only can be seen clearly when using high-resolution shadow settings.

(And by the way, in the picture there are blocks from other mods.)

OK, I know why this happens now. It's the Botania's fault, sorry for interruputing.
The more Botania blocks that are placed, the more strange the shadows become.