If the item generated by using_converts_to of component food also contains using_converts_to component, an additional ghost item will be generated (in some cases, it will become a normal item)

/give @p honey_block[minecraft:food={can_always_eat:true,eat_seconds:0.05,nutrition:1,saturation:0,using_converts_to:{id:"moss_block",components:{"minecraft:food":{can_always_eat:true,eat_seconds:0.15,nutrition:1,saturation:1,using_converts_to:{id:"grass_block",components:{"minecraft:food":{can_always_eat:true,eat_seconds:0.9,nutrition:1,saturation:2}}}}}}}] 64

It is recommended to watch the video:

Through 2024-05-23 19-47-12.mp4 you can see that even items that are generated normally cannot stack with the original items if they are saved and reopened when placed separately.