Output elements not triggered when nested in modal

[MJaegerRCH]

I've noticed an issue where output elements that are defined within modals are not displaying.

Environment: Posit Workbench 2025.5.1
R: 4.4.3

Minimal example to reproduce the issue:

library(shiny)
library(shinyBS)

ui <- fluidPage(
  actionButton("myButton", "Open modal"),
  
  bsModal(
    id = "myModal",
    title = "Example modal",
    trigger = "myButton",
    size = "large",
    
    actionButton(
      "btnRun", "Run",
      icon = icon("person-running", lib = "font-awesome")
    ),
    
    uiOutput("myoutput")
  )
)

server <- function(input, output, session) {
  
  output$myoutput <- renderUI({
    req(input$btnRun)
    HTML("Hello!")
  })
}

shinyApp(ui, server)

I expect the Run button to display the "Hello!" output, but instead it does nothing.

Any input or suggestions would be appreciated. Thanks.