Squids are momentarily desynced (or flying) before snapping back to their original location.

Steps to reproduce:

1. Locate body of water. 

/locatebiome minecraft:deep_ocean

 2. Create soul sand platform in water.

/fill ~ ~ ~ ~32 ~ ~32 minecraft:soul_sand replace

3. Spawn squids on platform.

Video:

https://streamable.com/d6h3nr