New Ciders bought after the server restart are not stackable and do not disappear from your inventory after being consumed.
They're not supposed to be stackable afaik, but they certainly should disappear from your inventory after use. Thanks for letting us know.
I think there are like 150 left on my character MrSnippy, which is who i was referring to. They went pretty fast with the 3min bug lol. It wasn't from any recent stackable bug either, it was from like... feb/march?