Cactus placed on a sand block that is directly above water does not grow, despite the sand block meeting all the typical growth requirements for cacti (no blocks beside it and a valid space for growth).
Steps to Reproduce:
Place a sand block directly above water (such as on a small elevated platform).
Place a cactus on the sand block.
Observe the cactus, as it does not grow after a significant amount of time.
Expected Result:
The cactus should grow as long as the sand block is clear of surrounding blocks (except for the cactus itself) and there's enough vertical space.
Observed Result:
The cactus does not grow when placed on the sand block directly above the water.
I can’t reproduce this, please post a screenshot of your cactus setup, demonstrating clearly that all blocks adjacent to the space where the cactus should grow (apart from the cactus underneath it) are air.