Composer handle can be dragged up behind the site header on touchscreen devices

[Don]

Hello,

If I see it correctly you using a touchscreen device. I tried to repro it on an iPad and I can.

Here is a quick fix which works for me on iPad.

body:not(.ios-safari-composer-hacks) {
  #reply-control.open {
    max-height: calc(100vh - var(--header-offset) - env(safe-area-inset-bottom));
  }
}