Problem with bootstrap modal

[RicardoBer]

When I used in an input into a bootstrap modal the keyboard shows under backdrop, so it is unusable.

My current workaround is this:

$(document).ready(function () {
  //Pongo el teclado delante de todo por las modales (se quedan debajo por defecto)
    $('#mlkeyboard').css('z-index', 9999);
}