`tabsetPanel` doesn't work in React context

[kamilzyla]

Reproducible example

shinyApp(
  ui = bootstrapPage(
    shiny.react:::ReactContext(
      tabsetPanel(
        id = "tabset",
        selected = "tab2",
        tabPanel("tab1", "Tab 1"),
        tabPanel("tab2", "Tab 2")
      )
    )
  ),
  server = function(input, output) {
    observe(dput(input$tabset))
  }
)

Problems

1. After initially loading the app, no tab is selected. Removing selected = "tab2" doesn't change this.
2. It is possible to click on the tab to select it, but it won't be sent to the server (input$tabset is NULL).

Expected behavior

The app should behave as it would if we replaced shiny.react:::ReactContext() with div():

1. The tab passed as selected argument should be actually selected when the application is initially loaded.
2. The currently selected tab should be available on the server as input$tabset.

Notes

Replacing shiny.react:::ReactContext() with shiny.react:::ShinyBindingWrapper() seems to resolve problem (2).