Critical: Too much nether monsters

Description The problem is a bit too much monsters. There are approximately 600+ monsters on 1 island

For these mobs, I didn't set a limit. BSkyblock settings:

  spawn-limits:
    # Spawn limits. These override the limits set in bukkit.yml
    # If set to a negative number, the server defaults will be used
    # Added since 1.11.2.
    monsters: -1
    # Added since 1.11.2.
    animals: -1
    # Added since 1.11.2.
    water-animals: -1
    # Added since 1.11.2.
    ambient: -1

So it should look for bukkit and the monsters from bukkit are 24. This is clearly more that 24. I think is related to other limits issues. (Infinite bee's, slimes) But I'm not sure.

Steps to reproduce the behavior:

Go to the nether
Check to see how many mobs there are of an unlimited kind of mob

Expected behavior Normal mob spawning behavior

Screenshots 2020-09-11_22 11 07

Server Information:

[Please complete the following information:]

Database being used (YAML, JSON, MySQL, MongoDB): [JSON]
OS: [Linux]
Java Version: [Java 11]
BentoBox version: [e.g. 1.7.2.21]

Addons installed? [Do '/bentobox version' and copy/paste from the console]

Running Invalid (PURPUR) 1.16.1.
BentoBox version: 1.15.1-SNAPSHOT-b1869
Database: JSON
Loaded Game Worlds:
bskyblock_world (BSkyBlock): Overworld, Nether, The End
Loaded Addons:
Biomes 1.13.0 (ENABLED)
BSkyBlock 1.14.1-SNAPSHOT-b673 (ENABLED)
Challenges 0.8.4-SNAPSHOT-b428 (ENABLED)
Level 2.4.1 (ENABLED)
Limits 1.15.0-SNAPSHOT-b231 (ENABLED)
MagicCobblestoneGenerator 2.2.0-SNAPSHOT-b160 (ENABLED)
Warps 1.10.1-SNAPSHOT-b267 (ENABLED)

Other plugins? [Do '/plugins' and copy/paste from the console]

Additional context

BentoBoxWorld / Limits

Critical: Too much nether monsters #98