I am relaying that I am able to have the whole process perform automatically with my testing. It adds the effect to trigger the roll and remove the [USED] as well. No manual interaction. I have tried it with a few other NPCs that have recharge action/traits and they are performing as expected as well. I have seen it get hung up and not function properly, but with some manual interaction it gets it sorted and back to performing automatically. My suggestion was to try and reset it's functionality and see if it gets back on track.