I'm surprised. this sprite shows up in LM (btw thanks for caring about proper display); but it does not activate inside the game.
I am in a standard lorom game.
I'm having the same issue, it is able to insert successfully according to pixi, I add it in lunar magic and see the sprite and description as what shows in the .json file but when I load up the rom it doesn't spawn. I even tested in a clean rom and had the same issue. I am using pixi 1.2.14 and LM 3.11.