Tooltip nullFormat not working in maps

[rwaaijman]

when creating a map with missing data, I would like to show a tooltip "Missing"
It took a long time before I found the solution: series(nullInteraction = TRUE).
Is it possible to set this standard on TRUE?

mapdata <- get_data_from_map(download_map_data("custom/usa-and-canada"))

glimpse(mapdata)

data_fake <- mapdata |>
  select(code = `hc-a2`) |>
  mutate(value = 1e5 * abs(rt(nrow(mapdata), df = 10)))

# value NT on not available
data_fake$value[data_fake$code == "AZ"] <- NA

glimpse(data_fake)


highchart(type = "map") |>
  hc_chart(map = download_map_data("custom/usa-and-canada")) |>
  hc_add_series(
    data_fake
    , joinBy = c("hc-a2", "code")
    , name = "Fake data"
    , dataLabels = list(enabled = TRUE, format = "{point.name}", nullFormat = "N/A")
    #, nullInteraction = TRUE
  ) |>
  hc_colorAxis(auxpar = NULL) |>
  hc_tooltip(valueDecimals = 0, nullFormat = "Missing data")```

[stale]

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