trace shown in hoverinfo despite using hoverinfo='skip'

Coming from here.

After updating from R plotly 4.9.4.1 to 4.10.0 (and therefore updating underlying plotly.js library from v1.57.1 to v2.5.1 as mentioned in the NEWS) using hoverinfo='skip' along with hovermode = 'y unified' still shows a trace - only the trace name is hidden:

library(plotly)

fig <- plot_ly()
fig <- fig %>% add_trace(x = ~2:4, y = ~4:6, name = "yaxis data", mode = "lines+markers", type = "scatter")
fig <- fig %>% add_trace(x = ~4:6, y = ~4:6, name = "yaxis 2 data", mode = "lines+markers", type = "scatter")
fig <- fig %>% add_trace(x = ~6:8, y = ~4:6, name = "omit_hoverinfo", mode = "lines+markers", type = "scatter", hoverinfo='skip')

fig <- fig %>% layout(
  hovermode = 'y unified'
)

fig

Result using R plotly 4.9.4.1:

Inizia riproducendo l’esempio R fornito con hoverinfo='skip' e hovermode='y unified', confrontando R plotly 4.9.4.1 e 4.10.0. Poi esamina la gestione sottostante dell’hover in plotly.js; il lavoro sarà completato quando la trace saltata non comparirà più nell’output dell’hover unificato, mentre le altre trace rimarranno visibili.