Is the item that won't stack damaged? A damaged item won't stack with undamaged items of the same type. Try applying a repair kit to it and see if it stacks okay after that.

Here's a really crazy and extreme thought. One of the overriding themes of Factorio is to automate everything possible. Taken to the extreme, one could imagine this automation could include the development and maintenance of software, including the game Factorio itself. Maybe even automate release m...

After reading through this thread and a few other discussions on island spawns, there's one possible solution that I didn't come across. Give the player an opportunity to place himself somewhere else on the starting map. He'd only be able to do this once without disabling achievements (if the player...