The offerings don’t drop, they have to be harvested. Why would you keep collecting them if you had a fully upgraded altar? Thing’s mostly just ornamental anyway maybe I’ll just delete it. It’s hardly “trivial” that the altar cannot be moved and it grows in a weird and counterintuitive way offering you no chance to correct its placement, or get back the offerings if you have to delete it.

Typical kinda stuff, go to a game forum with an obvious quality of life problem that has been complained about for years, and someone will trivialize the issue and say there is no problem.