So I booted up the quicksave we had just prior to the bug happening and was able to recreate it and record it on OBS. Not sure if links are allowed but I could upload to like google drive or something similar to share.
Open save as an oathbreaker. Talk to Oathbreaker Paladin in camp. Pay 2000. Still an Oathbreaker. Finish long rest. Come back to camp. Oathbreaker Paladin gone. Still Oathbreaker and now no way to even fix it at all.
Like I said, this would be his 2nd time breaking his oath in this save, we're just not sure when it triggered, he just happened to notice his skills were different. I thought it was after the Minthara fight, but the save starts in the Underdark so I guess I recalled incorrectly lol.
Last edited by EMcX87; 26/01/23 12:32 AM. Reason: Adding more info