Plot does not show hoverinfo for first data point when default hovermode or set to 'closest'

As written in the title, the hoverinfo for the first (bottom left) data point when layout.hovermode= 'closest' or kept as default does not appear.

# call library
library(plotly)

# reset fig
fig <- NULL

# add an extra line to check behavior on right hand side of graph
cars_one_extra_line <- rbind(cars,c(25,90))

# plot
fig <- plot_ly(cars_one_extra_line)
fig <- fig %>% add_trace(x = ~speed, 
                         y = ~dist, 
                         color = ~dist,
                         colors = 'RdBu',
                         type = 'scatter',
                         mode = 'markers')
fig <- fig %>% layout(hovermode = "closest") 
fig

This is shown in the screenshot below. If the cursor is moved to the point above, the hoverinfo appears.

In an effort to understand the behavior, I also tried other tags. Strangely, the hovermode = 'y' also seems to have a weird behavior. Things to note are the following:

• text is tilted,
• text is sometimes obscured beyond the viewing frame (not shown in this example but does occur in certain cases),
• text is sometimes shown twice but in two places,
• y axis position is not always shown (for points at the top and bottom of the chart)

使用 plot_ly、散点标记，并将 hovermode 设置为 "closest" 或 "y"，运行提供的 R 复现代码，以确认 hover 缺失和格式错误的行为。跟踪 R 包及其交互式图形输出所使用的 hover 渲染路径；完成的标准是第一个点显示 hoverinfo，并且报告的 hovermode 情况能够一致地渲染，不出现裁剪、重复或缺失轴位置。