Auto-crafter is connected to a storage, 1 recycler and 2 smelters. 2 RTGs and a chemistry lab are in the corners. Maybe it's just me, but it was not obvious it can interact with all 8 tiles.

Steps to reproduce the duplication bug:

1. place auto-crafter and some compatible modules (eg. chemistry lab, smelter) around it

2. set up at least 1-2 recipes, ingredients do not matter, no actual crafting is required

3. wait till the next game day when it auto saves

4. restart the game

5. all recipes will be at least duplicated, if not more

6. if you repeat this again, those 4 recipes will again turn into 8

Save folder backed up. Below is an example of what I mean, marked in red is the refined scrap recipe and a duplicated one on the far right. More beams and plates are also further to the right. The same with air tanks and metal plates on the next image.

This is the setup of the auto-crafter I used:

After more testing, the issue is somewhere between the game auto saving at the start of a new day and loading after restarting the game. Edited previous post with details to reproduce this.

2 other issues, not worth creating a new thread

- new crafting jobs are added right away, with the default settings, before one can even choose the recipe

* it could be more intuitive if the recipe was added only after choosing the item to craft

- with multiple modules of the same kind (2 smelters) the possible recipes are shown for each of them

* when adding new job you can see multiple metal plates, beams, one for each smelter connected