Hello, I have tried to make a piston TNT Duper in 1.20.1 version but it does not work.

I know this may not get patched back into the Spigot branch but I can't see why not in craftbukkit.

This is not working in craftbukkit 1.20.1 and spigot.

Craftbukkit (I thought) is suppose to be the vanilla experience with plugin support so this bug/feature is used in a lot of farms. I understand this not being patched in Spigot because of optimization but in craft bukkit too. This patch in Spigot, makes PaperMC's config to re-enable not work either. The carpet and rails dupe still exist but not the tnt dupe.

This does still work on stock single player and MC's server.