ggplotly() unable to fit 4 plots in 3 columns using a "ggplot() + facet_wrap()" object

Hi,
It turns out that ggplotly() is unable to fit 4 plots in 3columns when the ggplot object to be converted was designed using this structure ggplot(df, aes(x,y) + facet_wrap(~ var, ncol = 3). It does not matter which example you use.

Let's use this example from the plotly community website, see section "labels":

https://plotly.com/ggplot2/facet_wrap/#labels

df <- diamonds[sample(1:nrow(diamonds), size = 1000), ]

# Create labels
labs <- c("Best","Second best","Third best","Average", "Average","Third Worst","Second Worst","Worst")
levels(df$clarity) <- rev(labs)

# filter variable "clarity" to get 4 plots in the facet
df <- df %>% 
       filter(clarity %in% c("Worst", "Average", "Third best", "Best"))

p <- ggplot(df, aes(carat, price)) + 
    geom_point() + 
    facet_wrap(~ clarity, ncol = 3) # make clear that 3 columns are needed

fig <- ggplotly(p)

fig

I will attach the outputs so you can see the bug:

It is easy tu bypass this issue, just changing the number of columns. Nevertheless, it would be great if this didn't happen.

Kind regards,

Sergi

Riproduci il problema con l’esempio diamonds della pagina Plotly «facet_wrap labels», usando ggplot() con facet_wrap(~ clarity, ncol = 3) e convertendolo con ggplotly(). Esamina la conversione di facet_wrap e confronta il risultato renderizzato con il ggplot originale. Il lavoro è completato quando quattro grafici rientrano correttamente in tre colonne nella figura convertita.