Crafting actions (be they cooking, grilling, mixing, grinding, smelting, etc) should be stoppable once begun.
Mistakes can be made: wrong recipe, accidentally hit 'max', or just a change of mind for instance
However once begun they cannot be stopped
Currently attempts to cancel a crafting action results in a taunting "Let it finish!" message in local, while force closing Glitch does nothing.
The dichotomy between the seemingly gradual nature of the crafting (loading bars, crafting one item at a time) and what must the be instantaneous reality of the programming, breaks down when one tries to 'cancel' an action halfway through.
This results in a feeling of loss of control for the Glitchen who assume that s/he has control over the gradual (usually irreversible) process.
Suggestion is to program it so that these actions can be cancelled halfway through.
(this is just my opinion, but I think its right either way, hopefully its not too hard to program in though.)