Light/block/shadow

[NymOo]

I'm developing a Minecraft mod that adds power armor and I'm having a problem. Why are the sides of my block darkened if there is another block under my block? moreover, the blackout always occurs only on the north and south sides.

 

[MaximPixel]

There is an entity on the screenshot? If it is, the hitbox might be inside the block. To make it easier, look at how the armor stand is made.

 

[NymOo]

There is an entity on the screenshot? If it is, the hitbox might be inside the block. To make it easier, look at how the armor stand is made.

The whole model is a block