[MC-266038] You can no longer make beacons with custom effects as of 23w31a

You can no longer give a beacon potion effects outside of the normal beacon effects using commands

Steps to Reproduce

• Build a Beacon Pyramid

• Set the Beacon to any effect

• Stand on top of the beacon

• run /data merge block ~ ~-1 ~ {primary_effect:"minecraft:darkness"}

• Notice the beacon lose its active primary effect entirely, instead of gaining darkness

Attachments

8mb.video-rJD-pNxqO8YT.mp4

Comments 3

[Mod] turbo 2023-10-24T12:43:40Z

I seem to be unable to reproduce your expected behavior in a version prior to 23w31a, such as 1.20.1. In fact, it shouldn't even be possible per MC-91854 resolution. Please attach a video where you can see this working with F3 debug screen enabled.

ic22487 2023-10-24T14:00:28Z

Apparently this is a spigot feature - messed with it for fun on quite a few servers and took it for granted that it was in the base game

Probably should've thoroughly tested more for which version this last worked in - but assumed it was that snapshot because of the changes to beacons made in it

[Mod] turbo 2023-10-24T15:22:39Z

Please keep in mind that any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang. If you can reproduce the issue in a vanilla environment, please recreate the issue.