The game does not seem to reload the world for World Events that I fail for the first time. For example, in Asgard where you are supposed to free the cow. The rock moved in a location which made it immovable and now I cannot complete the event. Another example is in Lunden where you have to free the stuck man without breaking the jars. When I broke two jars the quest became impossible to complete and I cannot redo it because the stack to be moved went on top of the jars and cannot be moved anymore.