Lately I have noticed that my pumpkin farms are working correctly, but the melon farms of the same design are not. Melons will not grow under observers/pistons but pumpkins will.
To reproduce:
Plant a pumpkin stem under a downward facing observer
Place downward facing pistons adjacent to all four sides of the observer where the pumpkin can grow with redstone placed on the observer and pistons
Create same set up for melon
Pumpkins will spawn, the change in stem position will activate the observer and the piston will activate harvesting the pumpkin
The melon farm should work the same way but won't
To confirm, I set the random tick speed to 1000. Pumpkins spawn with high frequency, melons did not spawn at all. Melons spawn normally when nothing is placed above the stem
Expected result - both melons and pumpkins have identical spawning rules, so both should spawn under this set up.
This farm works in Java, and works for pumpkins in Bedrock, just not melons
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I've noticed that my alternate melon farm, that doesn't use an observer to detect melon growth, is still working. In this farm there is nothing above the stem, instead I'm running redstone power through the space where the melon can spawn, so when it does it activates a piston above the melon. The issue is definitely putting the block above the stem, but only for melons, not for pumpkins
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
Is this still an issue in the latest version? If yes, can you please add it to the affected versions (or mention it if you are not the reporter)?
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My test worked, but when I increased the tick speed to 1000 on a creative copy of my survival world, my pumpkin farm produced hundreds of pumpkins but my melon farm didn't produce anything.ย While both farms are adequately lit (both have lanterns next to the glass that encases the side of the farm, the difference between my test and the copy is that the farms have a roof over them.ย The roof seems to be the problem - the melon farm seems to only want to work if it's daylight providing the light source
Melon farm is on left, pumpkin farm on right. Identical builds (observer looking down at stem, downward pistons next to observer, redstone on top. Observer sees stem grow (pumpkin/melon grow), activates piston to harvest.ย Pumpkin farm works with or without roof, melon farm only works without roof.ย ย
I did another test and found that if I removed and replanted the melon stems the farm worked again. I don't know if this means the issue is resolved or not, but this solution corrected the problem
Cleaning up old tickets: This ticket has not been updated recently (~3 months+) so is being closed asย Cannot Reproduce.ย If you feel this is still a valid issue then please comment, or create a new ticket following the [Issue Guidelines|https://aka.ms/MCBugTrackerHelp].
I believe this may have started in 1.17, although not sure which release. I noticed my pumpkin farms were accumulating crops, but the melon farms weren't. I assumed I was out of the range of the melon farm but in the range of the pumpkin farm, but after further, recent testing, realized this is not the case.