Pretty much every time I load up the Wolf trial in the Templebrough Fort mastery challenge I am always missing oil jars. Out of the like 20 times I have reloaded it, there are always some missing(not always the same ones). Its seems like the places they are missing have the burn marks on the ground like they have after they explode and burn up, but I obviously haven't shot any of them yet since I just started the challenge, so it seems like they aren't resetting after attempts. I have tried backing out of the challenge and coming back to it and there is no change. I have also tried restarting the game and verifying the game files and still have had no luck.