changing the order of levels of the factor mapped to colour doesn't control it in legend

[ellisp]

in ggsdc

     ldeaths_df %>%
        mutate(sex = factor(sex, levels = c("male", "female"))) %>%
   ggsdc(aes(x = YearMon, y = deaths, colour = sex), method = "seas") +
   geom_line()

and

     ldeaths_df %>%
        mutate(sex = factor(sex, levels = c("female", "male"))) %>%
   ggsdc(aes(x = YearMon, y = deaths, colour = sex), method = "seas") +
   geom_line()

both produce the same results and they should change the order on the legend. An "as character" somewhere is killing the factor level ordering.