Warning when using facet_grid() with ordered factors

[lgaborini]

A bit of a niche issue, the plotting works fine, and the factor ordering is also retained, but I signal it nevertheless.

library(ggplot2)

df <- mtcars |>
  dplyr::mutate(
    dplyr::across(c(gear, carb), ordered)
  )

df |>
  ggplot(aes(mpg, wt)) +
  geom_point() +
  facet_grid(
    vars(gear), vars(carb),
    margins = TRUE
  )
#> Warning: Combining variables of class <ordered> and <factor> was deprecated in ggplot2
#> 3.4.0.
#> ℹ Please ensure your variables are compatible before plotting (location:
#>   `reshape_add_margins()`)
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
#> generated.
#> Warning: Combining variables of class <factor> and <ordered> was deprecated in ggplot2
#> 3.4.0.
#> ℹ Please ensure your variables are compatible before plotting (location:
#>   `reshape_add_margins()`)
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
#> generated.

^{Created on 2025-05-26 with reprex v2.1.1}

[teunbrand]

And so the saga of #5109 and #5666 continues...
Thanks for the report nonetheless!