hovertemplate not rendering text for single items in the plot

When using hovertemplate in bar charts to annotate bars,
if the variable is present only once then text annotation doesn't work

For example in below image, Type B is only present once
and when hovered on it shows as "%{text}

but when using hoverinfo it seems to work fine

I need to use hovertemplate, as i had to use it in a function, where color and text options are passed as variable

any workaround to fix this?

Reproducible code example

library(data.table)
library(plotly)

data <- data.table(Date = c(rep(as.Date("2022-10-18"), 3),
                                rep(as.Date("2022-10-19"), 3),
                                rep(as.Date("2022-10-20"), 3)),
                       Type = c('A', 'B', 'C', 'A', 'D', 'C', 'C', 'D', 'A'),
                       Frequency = c(6, 3,  6, 10,  9,  9,  9,  3,  2))

# hovertemplate - Type B is only one entry and it shows as %{text}
plot_ly(data, x=~Date, y=~Frequency, color=~Type, type='bar', text=~Type,
        hovertemplate=paste('<b>%{text}</b>',
                            '<br><b>%{y}</b>',
                            '<br><b>%{x}</b>',
                            '<extra></extra>')) %>%
  layout(barmode="stack")

# hoverinfo - works as expected
plot_ly(data, x=~Date, y=~Frequency, color=~Type, type='bar',
        hoverinfo = 'text',
        text = ~paste('<b>', Type, '</b>',
                      '<br><b>', Date, '</b>',
                      '<br><b>', Frequency, '</b>')) %>%
  layout(barmode="stack")

Eseguire l’esempio R riproducibile dell’issue e confrontare gli output di hovertemplate e hoverinfo, concentrandosi sull’unica barra Type B. Tracciare il percorso di rendering di Plotly utilizzato dal pacchetto R; il lavoro è completato quando hovertemplate visualizza il testo Type B invece del valore letterale %{text}.