ggplot() does not display aesthetic in tooltip when aesthetic name == 'group' #2415

library(ggplot2)
library(plotly)

data(iris)

p1 <- ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, col = Species)) + 
    geom_point()

p1

ggplotly(p1, tooltip = "Species")

# => works fine!


iris2 <- iris
iris2$group <- iris2$Species

p2 <- ggplot(iris2, aes(x = Sepal.Length, y = Sepal.Width, col = group)) + 
    geom_point()

p2

ggplotly(p2, tooltip = "group")

# => does not show 'group' in tooltip

ggplotly(p2, tooltip = "all")

# => shows 'Sepal.Length' and 'Sepal.Width', but not 'group' in tooltip

R version 4.4.2 (2024-10-31 ucrt)
Platform: x86_64-w64-mingw32/x64
Running under: Windows 10 x64 (build 19045)

Matrix products: default


locale:
[1] LC_COLLATE=English_United States.utf8  LC_CTYPE=English_United States.utf8    LC_MONETARY=English_United States.utf8
[4] LC_NUMERIC=C                           LC_TIME=English_United States.utf8    

time zone: Europe/Berlin
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] plotly_4.10.4 ggplot2_3.5.1

loaded via a namespace (and not attached):
 [1] vctrs_0.6.5       httr_1.4.7        cli_3.6.3         rlang_1.1.4       purrr_1.0.2       generics_0.1.3    jsonlite_1.8.9   
 [8] data.table_1.16.4 labeling_0.4.3    glue_1.8.0        colorspace_2.1-1  htmltools_0.5.8.1 scales_1.3.0      grid_4.4.2       
[15] crosstalk_1.2.1   munsell_0.5.1     tibble_3.2.1      fastmap_1.2.0     yaml_2.3.10       lifecycle_1.0.4   compiler_4.4.2   
[22] dplyr_1.1.4       htmlwidgets_1.6.4 pkgconfig_2.0.3   tidyr_1.3.1       rstudioapi_0.17.1 farver_2.1.2      digest_0.6.37    
[29] viridisLite_0.4.2 R6_2.5.1          tidyselect_1.2.1  pillar_1.10.1     magrittr_2.0.3    tools_4.4.2       withr_3.0.2      
[36] gtable_0.3.6      lazyeval_0.2.2