The Bug
Foxes in Java Edition consider Ominous Bottle as food while in Bedrock Edition they don't.
How to reproduce
Drop a Potato (or any food) to a fox whilst it has an Ominous Bottle in its mouth and watch.
The Result
In Java Edition, it may not pick up the Potato (or any food) until it finishes eating the Ominous Bottle.
In Bedrock Edition, it will immediately drop the Ominous Bottle and pick up the Potato.
It seems to be more like a parity issue, so it may not be a duplicate to MC-144079
It was fixed in 24w34a by removing the food item stack component from the ominous bottle