Stop, Quick drop, and Roll Slappy Quest bug

Not sure if anyone else is having the same issue but when i originally did this challenge or tried to complete it i went thru everything with no problem when all of the sudden on the next few tasks it put me through that same cut scene that played at the end of the slappy quest starts to play again, upon looking again it says 6/6 for the quest and to listen to slappy but everytime i let it play all the way thru or skip it, it just never seems to complete forcing me to just ride around and do minor tasks and bearing challenges… if anyone’s got a fix for this they did id appreciate it but i have a feeling they need to just patch it