marker size is incorrect when colouring / grouping variable is non-numeric

The first two markers should be small, the next two large. Instead, the first and third are small, and the second and fourth are large:

plot_ly(type = "scatter", mode = "markers", x = 1:4, y = 1:4, marker = list(size = c(5, 5, 10, 10)), color = c("1", "2", "1", "2"))

Grouping on a numeric variable makes the bug disappear:

plot_ly(type = "scatter", mode = "markers", x = 1:4, y = 1:4, marker = list(size = c(5, 5, 10, 10)), color = c(1, 2, 1, 2))

I am running R 3.6.3 on RHEL 7.6 with plotly 4.9.2.1

未指定源文件或测试。首先运行 issue 中的两个 plot_ly 示例，并跟踪字符颜色分组与数值颜色分组如何转换为标记数据；当两种情况下大小值都与其原始观测保持对齐，并且添加了回归测试覆盖时，即完成。