To produce an Imersite Crystal at 300% productivity, you need 2 Imersite Powder. However, recycling one crystal yields 3 Imersite Powder, whereas it should only return 2.
There is also an issue with filtering copper, iron, and rare minerals in the Advanced Chemical Plant. The 50% productivity bonus should not apply to water, as it results in excess water production.
** Fixed in the last update