Hi there,
Just an update on this - during testing we have found that for us the achievements are not updating until they are complete in one save we have. With regards to Thomas Edison, crafting in the workbench may also be a factor in comparison to crafting in the tool-belt. Similar to how experience may not be gained when crafting items in the workbench while doing something else.
We are going to continue to look into this to find the root cause of it occurring in saves, but I can confirm we have found something odd.
Do either of you see elements of the creative menu at all, even without creative/cheat mode?
Clare