Not sure if this is a duplicate, but I haven't found it. I've noticed, when updating my 1.17 world to 1.18 pre releases, Glow Squid are spawning in most mob farms and item water streams etc, for example, on layers of Gnembon dispenser mob farm (using slabs - even non stone variants), and in water streams when carrying items in to bubble column elevators - even if using packed ice, or glass as the base for the water stream. I was under the impression they were only supposed to spawn in five levels of water, with a stone block below, but the fact they are spawning on levels of a mob farm, and on water streams regardless of block type below, would suggest otherwise. Is this intended? Because if so, would like clarification on what the new spawning rules are.