Describe the bug
A clear and concise description of what the bug is.
Last spawner does not spawn on level 6

To Reproduce
Things needed to reproduce the behavior:

1. Your Mod List
   Using Modpack ABOE 3 1.5.2b
2. Your Minecraft Version & Forge version
   1.16.5
3. The version of the mod you are using
   BrassAmberBattleTowers-1.16.5-1.6.3.jar
4. If you are using any datapacks/self-created loot-tables etc.
   N/A
5. Server or Singleplayer?
   Server
6. OS: [e.g.Widnows/Mac/Linux]
   Windows
   Expected behavior
   Expected last spawner to spawn on level 6, unable to progress.

Screenshots
If applicable, add screenshots to help explain your problem.
I have included a video
Additional context
Add any other context about the problem here.

github's video player seems to be broken, ig you need to download to see it

Gotta be honest, right after this was first posted I looked at it and couldn't figure out why this was happening and then forgot about it. A couple of times I have come back to it and looked into it again but never found the reason for this bug.
Sorry, you ran into this, and sorry I never responded to it.

The video player works for me, I have never seen that happen before except with the overgrown tower variant. (which this is obviously not)

So apologies again for taking forever to look at this, but I will close it for now as a very very rare bug. if it happens again then I will look into it more.

it was happened again

@JMilamber someone else has the issue... a year later

Unfortunately I am no longer bug-fixing 1.16.5 as of seven-eight months ago.

As well as seeing that this a rare occurrence (1 per year)

Sorry that you both have had trouble with this.