In the following situation, if you change Librams the Judgment of Crusader will no longer refresh on Auto attack…
Judgment of the Crusader with Libram of Fervor, (fairly normal) and will maintain properly on auto attack per normal.
Where this breaks is if you swap to any other libram for its use, example swapping to Libram of Hope to heal and then back to auto attack to maintain the Judgment; the Judgment will no matter how often you hit the target still fall off.
Before most recent patch the behavior of the system was auto would refresh per usual. Something went wrong.