A cooker doesn't supply the Microbe Musher with stuff considering his priorities rules. In the priority screen his cooking errand is set on "very high". When the Microbe Musher is empty he's doing lower priorities errands and doesn't supply the Micromusher. Wasn't like that before. As I understand in the preview version the priority set on the cooking errand doesn't influence the supplying errands for the cooking processes
Steps to Reproduce
Supplying errands are disallowed for all. Cooking errands are disallowed for all except the cooker Set the highest cooking priority for a cooker. Permit him to do other low priorities errands. Notice that the supplying for cooking processes are not at the highest priority for the cooker
This issue has been fixed in either a future version or updated in a previous version.