hovertemplate does not show value

When using the %{text} placeholder, it sometimes gets displayed instead of the actual value of text. The following code produces a plot where, when I hover over the middle point, gives me this hover text:

Price: $6.84
X: 3
%{text}

Other points display correctly, eg.

Price: $2.03
X: 1
 Text A

The code I use is a slightly modified example:

tibble::tibble(
  x = c(1,2,3,4,5),
  y = c(2.02825,1.63728,6.83839,4.8485,4.73463),
  color = factor(c(1, 1, 2, 3, 3))) %>%
  plot_ly() %>% 
  add_trace(
    type = 'scatter', mode = 'lines+markers',
    x = ~x, y = ~y, color = ~color,
    text = c("Text A", "Text B", "Text C", "Text D", "Text E"),
    hovertemplate = paste('<i>Price</i>: $%{y:.2f}',
                          '<br><b>X</b>: %{x}<br>',
                          '<b>%{text}</b>'),
    showlegend = FALSE)

You can donwload the resulting html here (in case it renders differently for you for some reason). Note that when color is not used, this does not happen and all the points display correct hover text.

R version 3.6.3 (2020-02-29)
plotly 4.9.2.1

首先，使用列出的 R 和 plotly 版本运行提供的 plot_ly() 和 add_trace() 示例，然后比较有色和无色的 traces。确认中间点是否仍然渲染 %{text} 而不是 Text C，并利用这一比较追踪 hovertemplate 的处理方式。没有指定源文件或测试，因此当 reproducer 为每个点显示实际文本时即表示完成。