Make navbar toggler automatically collapse on tab selection

When using page_navbar with a collection of nav_panels on mobile (I think breakpoint is 992px), the navbar switches to a toggler.
I would expect the toggler to automatically collapse when selecting a new nav_panel, however it does not.
Am I missing something or is it normal behaviour ? In the latter case, could you add a feature for this ?

Thanks for your help on this topic !

Code :

library(bslib)

ui <- page_navbar(
    title = "My app",
    nav_spacer(),
    nav_panel("Page 1", h1("Page 1")),
    nav_panel("Page 2", h1("Page 2")),
    nav_spacer(),
    collapsible = TRUE,
    fluid = TRUE
)
server <- function(input, output, session) {
}

shinyApp(ui = ui, server = server)

Start by reproducing the supplied page_navbar example with collapsible=TRUE on a mobile-sized viewport, then trace the page_navbar and nav_panel behavior involved in tab selection. Done means selecting a nav_panel also collapses the mobile navbar toggler without disrupting navigation.