In express closing the sidebar programatically strips content

THe "Sidebar content" text disappears when the sidebar is programamtically opened or closed

from shiny import reactive
from shiny.express import input, render, ui

with ui.sidebar(id="sidebar"):
    "Sidebar content"

with ui.layout_columns():
    ui.input_action_button("open_sidebar", label="Open sidebar", class_="me-3")
    ui.input_action_button("close_sidebar", label="Close sidebar", class_="me-3")


@render.text
def state():
    return f"input.sidebar(): {input.sidebar()}"


@reactive.Effect
@reactive.event(input.open_sidebar)
def _():
    ui.update_sidebar("sidebar", show=True)


@reactive.Effect
@reactive.event(input.close_sidebar)
def _():
    ui.update_sidebar("sidebar", show=False)

Start by running the provided Shiny for Python example and inspect the sidebar rendering path together with ui.update_sidebar. Confirm that opening or closing the sidebar programmatically removes "Sidebar content"; done means the content remains visible after both updates.