rstudio / rstudio/bslib

Fails to render dynamic contents of popover if it does not have a title.

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ai-triage:done Priority: Medium regression
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Description

Describe the problem

Fails to render contents of popover if it does not have a title.

This only happens since shiny@1.4.0.

library(shiny)
ui <- bslib::page_fixed(
  theme = bslib::bs_theme("5"),
  bslib::card(class = "mt-5",
    bslib::card_header(
      bslib::tooltip(
        trigger = bslib::popover(
          trigger = shiny::icon("maximize"),
          id = "expbut",
          uiOutput("card_title"),
          uiOutput("card_yada")
        ),
        options = list(trigger = "hover"),
        class = "resize-button",
        "A tooltip"
      )
    ),
    "The card body..."
  )
)

server <- function(input, output) {
  default_slider_width <- reactiveVal(500)
  output$card_title <- renderUI({
    req(default_slider_width())
    shiny::tags$span("This is a new content")
  })
}

shiny::shinyApp(ui, server)
Session Info

─ Session info ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
 setting  value
 version  R version 4.5.2 (2025-10-31)
 os       Ubuntu 26.04 LTS
 system   x86_64, linux-gnu
 ui       Positron
 language (EN)
 collate  en_US.UTF-8
 ctype    en_US.UTF-8
 tz       Europe/Lisbon
 date     2026-06-29
 pandoc   3.7.0.2 @ /usr/bin/pandoc
 quarto   1.6.42 @ /opt/quarto/bin/quarto

─ Packages ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

! package     * version     date (UTC) lib source

bslib         0.11.0.9000 2026-06-29 [1] Github (rstudio/bslib@c87abc5)

P cachem        1.1.0       2024-05-16 [?] CRAN (R 4.5.0)

cli           3.6.6       2026-04-09 [1] CRAN (R 4.5.2)

devtools      2.5.2       2026-04-30 [1] CRAN (R 4.5.2)

P digest        0.6.39      2025-11-19 [?] CRAN (R 4.5.2)

ellipsis      0.3.3       2026-04-04 [1] CRAN (R 4.5.2)

P fastmap       1.2.0       2024-05-15 [?] CRAN (R 4.5.0)

P fontawesome   0.5.3       2024-11-16 [?] CRAN (R 4.5.0)

fs            2.1.0       2026-04-18 [1] CRAN (R 4.5.2)

glue          1.8.1       2026-04-17 [1] CRAN (R 4.5.2)

P htmltools     0.5.9       2025-12-04 [?] CRAN (R 4.5.2)

P httpuv        1.6.17      2026-03-18 [?] CRAN (R 4.5.2)

P jquerylib     0.1.4       2021-04-26 [?] CRAN (R 4.5.0)

P jsonlite      2.0.0       2025-03-27 [?] CRAN (R 4.5.0)

P later         1.4.8       2026-03-05 [?] CRAN (R 4.5.2)

P lifecycle     1.0.5       2026-01-08 [?] CRAN (R 4.5.2)

P magrittr      2.0.5       2026-04-04 [?] CRAN (R 4.5.2)

P memoise       2.0.1       2021-11-26 [?] CRAN (R 4.5.0)

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

P otel          0.2.0       2025-08-29 [?] CRAN (R 4.5.2)

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

P pkgbuild      1.4.8       2025-05-26 [?] CRAN (R 4.5.0)

P pkgconfig     2.0.3       2019-09-22 [?] CRAN (R 4.5.0)

pkgload       1.5.3       2026-06-15 [1] CRAN (R 4.5.2)

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

purrr         1.2.2       2026-04-10 [1] CRAN (R 4.5.2)

P R6            2.6.1       2025-02-15 [?] CRAN (R 4.5.0)

Rcpp          1.1.1-1.1   2026-04-24 [1] CRAN (R 4.5.2)

renv          1.2.3       2026-05-16 [1] CRAN (R 4.5.2)

P rlang         1.2.0       2026-04-06 [?] CRAN (R 4.5.2)

P sass          0.4.10      2025-04-11 [?] CRAN (R 4.5.0)

sessioninfo   1.2.4       2026-06-04 [1] CRAN (R 4.5.2)

shiny       * 1.14.0      2026-06-21 [1] CRAN (R 4.5.2)

P tibble        3.3.1       2026-01-11 [?] CRAN (R 4.5.2)

usethis       3.2.1       2025-09-06 [1] CRAN (R 4.5.2)

vctrs         0.7.3       2026-04-11 [1] CRAN (R 4.5.2)

withr         3.0.3       2026-06-19 [1] CRAN (R 4.5.2)

P xtable        1.8-8       2026-02-22 [?] CRAN (R 4.5.2)


[1] /home/averissimo/.cache/R/renv/library/teal.widgets-ccbacd7b/linux-ubuntu-resolute/R-4.5/x86_64-pc-linux-gnu

[2] /home/averissimo/.cache/R/renv/sandbox/linux-ubuntu-resolute/R-4.5/x86_64-pc-linux-gnu/9a444a72


    

  • ── Packages attached to the search path.
    
P ── Loaded and on-disk path mismatch.
    • 



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Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the supplied Shiny app and reproducing the missing dynamic popover content with no title. Then trace the bslib popover and tooltip rendering behavior around the reported Shiny version change; done means the uiOutput contents render correctly without a title and the regression is covered by a test.

Written by the indexing model from the issue text.

Assessment

Tech stack
bootstrap, r
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
55/100

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