category axis and shapes not playing well when data representing numbers and xref = "x"

Providing a list of strings representing numbers for category axis converts them to number rather than keeping them as strings.
This for me results in the inability to use shapes to shade part of the graph.

Example of what is not working:

library(plotly)

# Sample data
x <- c("1234", "2345", "3456", "4567")
y <- c(10, 15, 8, 12)

# Create a Plotly chart with a bar plot
fig <- plot_ly(x = ~x, y = ~y)

# Define a rectangle shape
shapes <- list(
  list(
    type = "rect",
    line = list(color = "red"),
    x0 = "1234", x1 = "2345",
    y0 = 0, y1 = 1,
    xref = "x",
    yref = "paper"
  )
)

# Add the rectangle shape to the layout
fig <- fig %>% layout(
  title = 'Highlighting with Lines', 
  xaxis = list(
    type = 'category',
    autotypenumbers = 'strict'
  ),
  shapes = shapes
)

# Display the chart
fig

Example of what is working:

library(plotly)

# Sample data
x <- c("#1234", "#2345", "#3456", "#4567")
y <- c(10, 15, 8, 12)

# Create a Plotly chart with a bar plot
fig <- plot_ly(x = ~x, y = ~y)

# Define a rectangle shape
shapes <- list(
  list(
    type = "rect",
    line = list(color = "red"),
    x0 = "#1234", x1 = "#2345",
    y0 = 0, y1 = 1,
    xref = "x",
    yref = "paper"
  )
)

# Add the rectangle shape to the layout
fig <- fig %>% layout(
  title = 'Highlighting with Lines', 
  xaxis = list(
    type = 'category',
    autotypenumbers = 'strict'
  ),
  shapes = shapes
)

# Display the chart
fig

まず、提供された R の再現コードを plot_ly() と layout() で実行し、数値に見えるカテゴリラベルと、'#' を前置した正常に機能するラベルを比較します。xaxis type='category' と autotypenumbers='strict' が、棒データと xref='x' を持つ shapes の両方でどのように処理されるかを追跡します。数値に見える文字列がカテゴリのまま維持され、矩形が意図したカテゴリにまたがれば完了です。