A cask sadly seems to have vanished when trying to use it.

Empty cask was locked inside burrow. I partially filled it with water cups then clicked the "use" button in the right-click menu, which appeared to do nothing. Upon relogging, the cask had vanished.

Prior to this, I did attempt to fill the cask with water using the river, but was given a message saying that it couldn't be filled with that. Unsure if these two issues are related?