New bug(maby hidden feature) with nuclear waste

I have a let’s play world with 4,000 power plants (nuclear power plants) I hit 4 googles of uranium waste (not plutonium) and I haven’t put down a single-particle accelerator for plutonium power but once I hit 4 googles of uranium waste I started getting plutonium wast so I went to the nuclear setup and all my uranium fuel rods where now plutonium fuel rods and all my other uranium things where now plutonium things and I don’t have any of it attached to a blender or particle accelerator.
once again I am not sure if it is a bug or hidden feature