This is not a big mistake, but I just see in mining deep underground that it is obviously raining above. It is so, as if only individual blocks were "permeable" -
Unfortunately I was not able to make a picture of it. it's just a few isolated drops that fall too fast.
Comments 3
Yes, relatively safe, I destroyed the blocks and saw that there is no water 2 blocks above. Also, the drops look different.
But I can not reproduce that.
Are you sure it's not "particles" from blocks with water above them? Those will "drip" in caves (or basically anywhere) when water is in the block above the solid block.