[BUG] Voxels spawn inside mountains and rocks see through textures

While looking for some sulfur and other things I spent several minutes not findings any. Only to find quite a few broken textures on mountains in games when looking behind them I can see that's where my voxels are but that is a mountain behind a mountain which cannot be mined and cannot be entered. Same thing constantly happens in caves and other locations. Not to mention hiding inside the rocks.