I recently completed my gold curse! Doing so required me to run through Revenge of the Morningstar of course. I now have checkpoints 2, 3, and final in my inventory. I thought it was odd I had all three and even when I delete them they just reappear. I also completed the final one a few times but it always comes right back into my inventory. I've spoken with a few other pirates who recently achieved the curse and they're having a similar if not exact same experience. While it's not hindering my gameplay, my completion OCD is going off. It's also incredibly exploitable and figured it needed a bit of attention. I came to the forums as I didn't see a place to submit an official bug report.
Also my game (PC) randomly crashes after last update but that's already been covered in other posts.