The number of allays spawning in the cage beside pillager outpost doesn't match java edition

In Java Edition, the number of allays spawning in the cage beside pillager outpost is always 2. However, in Bedrock Edition, you can find numbers ranging from 1 to 6. Among them, 1-3 allays account for more than 95% of the situation, which is easy to reproduce. I will give the seed and coordinate of 4 allays and 6 allays:

6 allays - seed:1234567 | coordinate:5648 72 -9799 | Cannot reproduce in 1.18.30.22 | Can reproduce in 1.20.60.22

4 allays - seed:9064150133272194 | coordinate:595 80 -2020 | Can reproduce in 1.18.30.22 and 1.20.60.22

The common point between above 2 examples is that the cage is on the edge of the chunk, resulting in spawning repeatedly.

Expected Results: The number should always be two like Java Edition.