Odd that this issue was not found during manufacture of the LPT given the rigorous QA procedures normally used with fracture critical components.
No QA is 100% reliable, thus the part itself must have the in-service time tolerance for the traces left behind. This appears to be more of a zero-time fleet management cost issue than a large safety risk so early in the program. I would be far more concerned if there were potential tens of parts in service that had accumulated thousands of flights