So, you craft ale wort with a water bucket, bread, and sugar. If you craft it once in an assembly halo from Botania and then save the recipe in one of the quick-craft slots, using the saved recipe to create further ale wort buckets will result in you getting both the ale wort bucket and an empty bucket back.
I'm pretty sure it also does this with the Manufactory Halo, and given that other fluid bucket recipes do not exhibit this behavior when crafted this way, I think it's a Rustic bug.
So, you craft ale wort with a water bucket, bread, and sugar. If you craft it once in an assembly halo from Botania and then save the recipe in one of the quick-craft slots, using the saved recipe to create further ale wort buckets will result in you getting both the ale wort bucket and an empty bucket back.
I'm pretty sure it also does this with the Manufactory Halo, and given that other fluid bucket recipes do not exhibit this behavior when crafted this way, I think it's a Rustic bug.