The radbolt generator resets the number of stored radbolts every time it loses power.
Why it's a problem
This is very frustrating because setting up a stable form of power in the early game is difficult and I'm basically just wasting energy as I'll gather 20 or 30 bolts and then my power will shut off - for typical early game reasons - and then all my radbolts are gone.
To reproduce attach a radbolt generator to power. Allow the generator to collect bolts but less than the minimum 50. Then shut off the power and see the bolts disappear.