The bug appears if you don't put a value after type "/worldboarder warning time(or distance)". Minecraft will return an unknown error instead of an error with the correct syntax.
Happen with Carrots, Potatoes and Wheats. But not with Melons and Pumpkins crops.
Lucas pal
The bug appears if you don't put a value after type "/worldboarder warning time(or distance)". Minecraft will return an unknown error instead of an error with the correct syntax.