color/symbol mapping breaks `transforms` filter

Issue

transforms filter plus color/symbol mapping seems to break the transforms filter.

Reprex

Sample data

df <- data.frame(
    x = c(1:10, 1:10),
    y = c(1:10, 10:1),
    z = c(rep("up", 10), rep("down", 10)))

The idea is to only show data where z = "up" through a transforms filter.

Case 1: transforms filter without color mapping

This works

plot_ly(
    df,
    x = ~x, y = ~y, text = ~z,
    type = "scatter", mode = "markers+text",
    marker = list(size = 10, opacity = 0.8),
    transforms = list(
        list(
            type = "filter",
            target = ~z,
            operation = "=",
            value = "up")))

Case 2: transforms filter with color mapping

This does not work

plot_ly(
    df,
    x = ~x, y = ~y, text = ~z, color = ~z,
    type = "scatter", mode = "markers+text",
    marker = list(size = 10, opacity = 0.8),
    transforms = list(
        list(
            type = "filter",
            target = ~z,
            operation = "=",
            value = "up")))

Summary

In both cases the transforms filter is the same and should select only those entries where z = "up"; however, when a color (or symbol) mapping is added, for some reason only entries where z = "down" are shown.

Inizia con i due reprex di plot_ly() nell’issue e confronta il comportamento generato con e senza il mapping color = ~z o il mapping di symbol. Riproduci il filtro transforms usando i dati forniti, quindi traccia il mapping plotly.R rilevante e la gestione di transforms; il lavoro è completato quando il filtro mostra costantemente solo le righe in cui z = "up" con il mapping di color o symbol abilitato.