Foxes exclusively consume food items when they are on the ground. If, for any reason, the OnGround NBT tag is set to 0, they will abstain from eating that item entirely. For instance, setting minecraft:generic.gravity to 0 or subjecting a fox to bouncing in a bubble column results in the absence of the OnGround NBT tag being set to 1, thereby ensuring they will not ingest the item under any circumstances.

The video demonstrates three foxes under different conditions: one with the gravity attribute set to 0, another bouncing in a bubble column, and the third with the minecraft:generic.gravity attribute set to the default value of 0.08. Only the fox with the default gravity setting eats the chorus fruit; the others refrain from doing so, even after several minutes. To replicate this, recreate the setup depicted in the video and provide the foxes with any edible item, such as a chorus fruit.

/attribute @e[type=minecraft:fox,limit=1,sort=nearest] minecraft:generic.gravity base set 0

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