Fineprint has action_interceptor as a dependency and it's overriding rails' redirect_back method which behaves differently than what rails is now. This can be replicated by having action_interceptor in your gemfile and running redirect_back without considering action_interceptor's way of using redirect_back.
Once I added store_fallback which is a method from action_interceptor, it worked as intended from action_interceptor's implementation.
Would there be a way to only use action_interceptor isolated within the fine_print gem? Or did I miss an install step that does this? It would be best if we can avoid overriding action_interceptor within the application's controller.