Italicizing strip.text with ggplotly

I've been trying to get the labels on a faceted grid to be italicized on the y-axis and can't seem to make it to happen.

Here I'll use the "Free Y Axis" example of a faceted grid as written by Plotly:
https://plotly.com/ggplot2/facet_grid/

The only change I've made to this code is make the strip text for both axes larger and the y-axis text italicized in the ggplot theme().

library(reshape2)
library(ggplot2)
library(plotly)

p <- ggplot(tips, aes(x=total_bill)) + geom_histogram(binwidth=2,colour="white")

# With panels that have the same scaling, but different range (and therefore different physical sizes)
p <- p + facet_grid(sex ~ smoker, scales="free", space="free") +
               theme(strip.text.x = element_text(size = 13),
               strip.text.y = element_text(size = 13,face = "italic"))

p

fig <- ggplotly(p)

fig

The plot produced by ggplot (p) looks like this, with the y-axis facet labels in italics:

The plot produced by ggplotly (fig) looks like this:

Any clarification if I'm missing something would be appreciated. Thank you!

Comienza con el ejemplo proporcionado „Free Y Axis“ y compara el objeto ggplot p con el resultado de ggplotly fig, centrándote en cómo se convierte el estilo del texto de las bandas de las facetas. Reproduce el estilo cursivo que falta en las etiquetas de las facetas del eje y; se considera terminado cuando ggplotly conserva el estilo cursivo y mantiene el texto más grande de la banda.