empty line not work in Bonito.jl Markdown

[kongdd]

using Bonito, Observables
using Bonito: @js_str, onjs, Button, TextField, Slider, linkjs, Session, App
using Bonito.DOM
using Markdown

# css_main = Bonito.Asset("./src/main.css")
app = App() do session::Session
  dom = md"""
  ## [Flood monitor](http://localhost/flood) 

  <br>
  <br>

  <hr>

  <p style=""></p>

  ## [leafmap](http://localhost/leafmap)
  """
  return Bonito.DOM.div(Bonito.MarkdownCSS, css_main, Bonito.Styling, dom)
end

[SimonDanisch]

This is a Markdown.jl problem:

[SimonDanisch]

I'd take this to Markdown.jl, since there's not much we can do here.