`nav_panel_hidden()` visible and keyboard navigable to in `navset_pill_list()`

[jack-davison]

Describe the problem

Create a nav_panel_hidden() within a navset_pill_list() and navigate to it.

1. There is padding in the list that makes it visible.

2. If you keyboard navigate to the pill list by tabbing and press up/down you can navigate to it. You don't actually need to "activate"/select the hidden tab for this to happen - you can do it from the off.

I imagine (1) is unintentional, not sure about (2) - in some ways its more accessible, but also a keyboard user could happen upon a page that they're not meant to by using tabs/arrows.

library(bslib)
library(shiny)

ui <- page_fixed(
  navset_pill_list(
    id = "root",
    nav_panel(
      title = "visible",
      input_task_button(
        id = "button",
        label = "Find hidden"
      )
    ),
    nav_panel_hidden(
      value = "hidden",
      "content"
    )
  )
)

server <- function(input, output, session) {
  observe({
    nav_select("root", "hidden")
  }) |>
    bindEvent(input$button)
}

shinyApp(ui, server)

Session Info

Details

─ Session info ──────────────────────────────────────────────────────────────────────────────────
 setting  value
 version  R version 4.5.1 (2025-06-13 ucrt)
 os       Windows 11 x64 (build 26100)
 system   x86_64, mingw32
 ui       RStudio
 language (EN)
 collate  English_United Kingdom.utf8
 ctype    English_United Kingdom.utf8
 tz       Europe/London
 date     2025-12-08
 rstudio  2025.09.1+401 Cucumberleaf Sunflower (desktop)
 pandoc   NA
 quarto   ERROR: Unknown command "TMPDIR=C:/Users/JD38/AppData/Local/Temp/Rtmp2n0gc0/filefdc449440a5". Did you mean command "install"? @ C:\\Users\\JD38\\AppData\\Local\\Programs\\Quarto\\bin\\quarto.exe
─ Packages ──────────────────────────────────────────────────────────────────────────────────────

package     * version    date (UTC) lib source

bslib       * 0.9.0.9002 2025-12-08 [1] Github (rstudio/bslib@0757592)

cachem        1.1.0      2024-05-16 [1] CRAN (R 4.5.1)

callr         3.7.6      2024-03-25 [1] CRAN (R 4.5.1)

cli           3.6.5      2025-04-23 [1] CRAN (R 4.5.1)

curl          7.0.0      2025-08-19 [1] CRAN (R 4.5.1)

desc          1.4.3      2023-12-10 [1] CRAN (R 4.5.1)

devtools      2.4.6      2025-10-03 [1] CRAN (R 4.5.1)

digest        0.6.39     2025-11-19 [1] CRAN (R 4.5.1)

ellipsis      0.3.2      2021-04-29 [1] CRAN (R 4.5.1)

fastmap       1.2.0      2024-05-15 [1] CRAN (R 4.5.1)

fontawesome   0.5.3      2024-11-16 [1] CRAN (R 4.5.1)

fs            1.6.6      2025-04-12 [1] CRAN (R 4.5.1)

glue          1.8.0      2024-09-30 [1] CRAN (R 4.5.1)

htmltools     0.5.8.1    2024-04-04 [1] CRAN (R 4.5.1)

httpuv        1.6.16     2025-04-16 [1] CRAN (R 4.5.1)

jquerylib     0.1.4      2021-04-26 [1] CRAN (R 4.5.1)

jsonlite      2.0.0      2025-03-27 [1] CRAN (R 4.5.1)

later         1.4.4      2025-08-27 [1] CRAN (R 4.5.1)

lifecycle     1.0.4      2023-11-07 [1] CRAN (R 4.5.1)

magrittr      2.0.4      2025-09-12 [1] CRAN (R 4.5.1)

memoise       2.0.1      2021-11-26 [1] CRAN (R 4.5.1)

mime          0.13       2025-03-17 [1] CRAN (R 4.5.0)

otel          0.2.0      2025-08-29 [1] CRAN (R 4.5.1)

pillar        1.11.1     2025-09-17 [1] CRAN (R 4.5.1)

pkgbuild      1.4.8      2025-05-26 [1] CRAN (R 4.5.1)

pkgconfig     2.0.3      2019-09-22 [1] CRAN (R 4.5.1)

pkgload       1.4.1      2025-09-23 [1] CRAN (R 4.5.1)

processx      3.8.6      2025-02-21 [1] CRAN (R 4.5.1)

promises      1.5.0      2025-11-01 [1] CRAN (R 4.5.2)

ps            1.9.1      2025-04-12 [1] CRAN (R 4.5.1)

purrr         1.2.0      2025-11-04 [1] CRAN (R 4.5.2)

R6            2.6.1      2025-02-15 [1] CRAN (R 4.5.1)

Rcpp          1.1.0      2025-07-02 [1] CRAN (R 4.5.1)

remotes       2.5.0      2024-03-17 [1] CRAN (R 4.5.1)

rlang         1.1.6.9000 2025-10-10 [1] Github (r-lib/rlang@b351966)

rstudioapi    0.17.1     2024-10-22 [1] CRAN (R 4.5.1)

sass          0.4.10     2025-04-11 [1] CRAN (R 4.5.1)

sessioninfo   1.2.3      2025-02-05 [1] CRAN (R 4.5.1)

shiny       * 1.11.1     2025-07-03 [1] CRAN (R 4.5.1)

tibble        3.3.0      2025-06-08 [1] CRAN (R 4.5.1)

usethis       3.2.1      2025-09-06 [1] CRAN (R 4.5.1)

vctrs         0.6.5.9000 2025-10-10 [1] Github (r-lib/vctrs@5b539da)

xtable        1.8-4      2019-04-21 [1] CRAN (R 4.5.1)

[jack-davison]

Similar to #1117.

I note that you can also keyboard navigate to hidden panels in a navbar, using the reprex from that issue.