When crafting anything (to my knowledge) by clicking the craft button and the overriding it by pressing craft all, it is as if I only pressed the craft button again. When pressing the craft all button after pressing craft, the timer is still reset but when completed does not continue to craft the items. I'm not sure if this has been reported yet or if it is actually a bug...
I also tested this on the default client, and it seems to be the same case there too.