Hi

After using some stabilized spawners fully upgraded (So Tier 3, nether star and a notch apple), I realised they don't work when they are chunkloaded without a player nearby. Tested this with villagers, creepers and wisps.

Right click on the spawner to make sure ignore player requirements are in fact set to true on the spawner, can not duplicate this in a test world and the only other option is if this is a server, they have protections in place that are preventing it.

It's a server. I'll try outside of the protected area (It's griefpreventionplus if you want to know).

Still the same, they don't work on the server. There's no protection present, and the spawner is fully upgraded.

We would need server logs then most likely, as well as a complete mod list as this has been tested in several modpacks now with no issues on a forge server. Maybe try this without any bukkit/sponge plugins and just on a pure forge server and see if it still happens. if not, then contact whatever server mod is being used (again sponge, bukkit, cauldron, etc)

Closing unless/until response of results