I was looking for a mod to add more slots to the alchemy cabinets that ship with TS3 but I found a bunch of posts of people complaining about their items disappearing when stored in there. Does anybody know if this was ever fixed or does everybody use other storage options instead?

I honestly still would like more slots to be added to it just for decorating purposes alone. I guess I'll start moving stuff out of mine for the time-being though.

I haven't had any problems with the alchemy cabinets disappearing things. I do think they are way to big for what little you are allowed to store on them. I usually play with small houses so space is always a concern for me. More slots would be great. Haven't heard of a mod like you talked about. Due to how few potions you can store in them and how much space they take up, I stopped using them and just store the potions in WA chests now.

There is an EA error where if that cabinet is reset, all the inventory is deleted.

Otherwise it is fine.