Glow squids clip through walls with no corners because of nearby axolotls

Glow squids would fly out of their cages if the cages had no corners and axolotls were nearby. This effect is amplified when more axolotls are around, as seen using a cage with more axolotls. The image below called "This is the smallest setup possible" shows the smallest setup possible to get the glitch working without a glow squid dying.

I was testing and found out that this is not a visual bug, since I can hit a glow squid even when it has flown out of the wall.

How to reproduce:

1. Build a cage. (or two)
2. Fill a cage with axolotls.
3. Fill the same or the other cage with glow squids.

If you're wondering how the axolotl is smiling, I used the Vanilla Tweaks resource pack.

Or build this: