Older version Apple Juice don't stack with New Version (or some other weird setup might trigger this effect), but what's weirder is that all Apple Juice she has made or had now all produce bottles but are not consumed.

No idea how to display the difference, if not to show Advanced Tooltips.
Fresh bottles

Old bottles

And what's still in the barrel.

Note the lack of (visible) differences. It might not even be in the log...

Fixed in 1.6.1