My automated cactus farm stopped working and it turns out that no cactus blocks where dropping. I tested it out on singleplayer and it worked fine. Then I did it again on multiplayer and it didn't work.

What I expected to happen was:
Cactus will drop as a block when broken

What actually happened was:
Nothing appeared.

Steps to Reproduce:
1. Place cactus in multiplayer.
2. Go onto survival
3. Break cactus.