Hi I'm building a cactus farm and when standing in the water stream the some of the cactus despawn before reaching me. I can see them but they do not go into my inventory and do not travel past me along the water stream. The reason I'm sure it's not because of stacking is that for the last 8 layers the profit hasn't gone up and there was a notable rise in profit every layer. Is there a known limit? If so I can take this into account and modify the farm accordingly.