Popups get cutoff by bottom of window

[cstefan]

Expected behavior.

The Popup position is calculated so that it is 100% visible.

Actual behavior.

In SPA type application, no scrollable container, and the editor is placed at the bottom of the page, like for a messaging app, the Toolbar triggered Popups are cropped.

Steps to reproduce the problem.

Demo

Just place the editor at a fixed position at the bottom of the page like this.

#froala-editor { 
    position: fixed;
    height: 150px;
    bottom: 0;
    left: 0;
    right: 0;
}

Editor version.

Version 4.2.1

OS.

ALL

Browser.

ALL

Recording.

(A recording showing how to reproduce the problem)