I am running a 1.16.0.2 server, when placing Ancient Debris in a furnace with fuel in it, it does not start smelting. I have tried both normal and blast furnaces.
Comments 6
It does have a behavior pack for single player sleep, I may try removing it tomorrow to see if it makes any difference.
It looks like this may have been due to a slightly odd install. I have now moved this world to a new server on the same version and the issue is no longer present.
did you use the nether wood in the furnace because they don't burn. make them into sticks and try again