Conan, as to the ‘another bug’ have you tried to cycle the elevator once without riding it? If it still happens after that, it deserves a new thread.
As to what some term ‘instacraft’, I have experienced that fairly often, but never load a cooker when coming to a base after a while, only the smelter, blacksmith, tanner or carpenter. There seems to be a problem with the ‘catch-up’ timer that causes this. See the following for an example of the opposite effect, but associated with the timer.