Hi,

My item sorter in BDS v1.13 is spawning squid in the water source blocks inside my item sorter. The Item sorter is inside a full perimeter and the top of the item sorter is at Y=20. The perimeter goes from Y=5 to Y=64 (and above in some places).

The water streams in the item sorter are at Y=14 

There is a chance that the water streams in the item sorter are slightly in a river biome ( However there is no F3 screen in Bedrock so I cannot confirm this).

The squid spawn in the one block source block in the water stream and then are pushed along until they reach the end of the item sorter. The end is where is water is just about running out and they suffocate at the end and they drop ink sacs.

The Wiki article for SQUID mentions that they should only spawn at Y = 46 and above and in Ocean biomes or river biomes.