Factorio Forums

It appears that the recipe for fission-reactor-equipment was accidentally included in both the base recipe set and the space age recipe set. This is the only recipe that is defined twice, so I assume it's a mistake that should be fixed. I doubt this actually breaks anything in the current build because the definitions are the same, but if you modify the recipes then it might cause problems in the future.

https://github.com/wube/factorio-data/b ... e.lua#L563
https://github.com/wube/factorio-data/b ... e.lua#L582

Technically nothing was broken so there is no changelog record for this. In 2.0.24 the duplicate recipe defined in space-age was removed.