Between 4.2 and 5.0 the behavior of how multiparameter attributes interact with `_before_type_cast` changed. In 4.2 it returns the post-type-cast value. After 5.0, it returns the hash that gets sent to the type. This behavior is correct, but will cause an issue if you then tried to render that value in an input like `text_field` or `hidden_field`. In this case, we want those fields to use the post