Glow Squids spawn in the Deep Dark

Glow Squids can still spawn in bodies of water in the Deep Dark, even though the Deep Dark should be free of mobs spawning.

How to replicate:

-Find a Deep Dark

-create a pool of water

-stand about 24 blocks away

-wait for a bit

Expectation:

Glow Squids never spawn, as mobs of any kind cannot spawn in the Deep Dark

Reality:

Glow Squids still spawn somehow