I have looked around the internet for an answer but everywhere it just has the text from the Minecraft changelog.
https://www.minecraft.net/en-us/article/the-wild-update-out-today-java
Added server property max-chained-neighbor-updates to limit the amount of consecutive neighbor updates before skipping additional ones
- Negative values remove the limit
I don't know what this neighbor update is referring to, and why it's defaulted to a big number of 1000000. Why was it important enough to be added as a setting?