when ever I store ingredients in my apothecary satchel in Breezehome, I end eating some of the ingredients. I am prompted to use the R key to store. Am i incorrectly storing them somehow?

Thank you.

Apothecary's Satchels are one of the many types of containers.

However, these types of containers customarily respawn.

That means:

Most containers in the game are subject to reset. So, they clear out all the contents after a certain period of time and are reset to their initial state.

Most containers reset after about a week of game time. However, examining the contents of the container causes the countdown to start over.

A container could be made to never reset simply by opening it once every 5-6 days or so. Any items left in a container that has reset is forever lost with no ways of getting it back.

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Except it's a bug or mod related

If it's a bug, i do not know, it it's fixed with the Unofficial Skyrim patch. !!!

If it's mod related, you should try to disable the responsible mod, if it's doable.

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I personally, never had the change to store items to an apothecary's satchel.