[MC-189025] Ocean Monuments generated in older versions, do not spawn guardians

What I expected to happen was...:
Guardians to spawn within the bounding box of my monument farm

What actually happened was...:
They are not spawning and have not been doing so for a few snapshots now. Previously fortresses were in the same boat, but they are now behaving properly. The same snapshot where fortresses were fixed, this bug was reported resolved but is still present.

Steps to Reproduce:
1. Generate an ocean monument in a previous version of the game. (mine was generated in 1.13)
2. Load up the world in the 1.16 snapshots/pre-releases

Comments 2

galaxy_2alex 2020-06-12T16:51:04Z

Was the world ever opened in any other 1.16 snapshot or pre-release?

numeritos 2020-06-12T17:11:28Z

I just created a world on 1.13, used /locate to locate a Monument, and I've load the world on 1.16 pre5, used /kill @e[type=guardian] and guardians were spawning normally.

It is probably that you loaded the world on 1.16 pre1 and this broke this structure.