Appears it is only Plasma Fruit for me that get bugged. My Vampire also have 7 Coconut in the inventory and can make the Lotta Cocolata without issue after load.
I also checked with some other harvestables (Coconut, Garlic, Avacado & Pineapple) if I can place the into the world and I can place them without issue, so again only the Plasma Fruit that have issues.
Tried if removing all Plasma Fruit from the household (sold / used them up) and then save and reload fix it, but sadly it did not. Next time I save and load with some fresh Plasma Fruit I got the issue again.
Reason I tried it is that maybe the stack size in the household or a single corrupted Plasma Fruit is the underlying problem.
