ggplotly tool tip disappearing for some points

Developing a Shiny app in R3.6.3 with ggplotly version4.9.2.

Plotting a scatter plot from ggplotly with tooltip of each point.

As the tool tip for each point grows larger (more rows), the points toward the top of the graph lose the tooltip even if the tool tip is the same for each point.

If the tooltip is the same, why do some points lose the tool tip and others can display it?

In the code below vary numRows or the size of the plot and points from top towards the bottom lose the tooltip.

numRows = 20

ggiris <- ggplot(data = iris,
                 aes(x = Petal.Width,
                     y = Sepal.Length,
                     color = Species,
                     text = paste(rep(LETTERS, length.out = numRows), collapse = "<br>"))) +
  geom_point()

ggplotly(ggiris, tooltip = "text")

首先运行提供的 R ggplotly 示例，并改变 numRows 和图表大小，以重现缺失的工具提示。跟踪 ggplotly 如何为图表顶部附近的点渲染较大的工具提示内容；当工具提示文本相同时每个点都保留其工具提示，即表示完成。