title: Problem in Firefox with interact.js - draggable and iframe
body: <p>When I create a draggable element with an iframe in it, an error occurs when dragging. As soon as the cursor is over the iframe, dragging stops. Does anyone know the problem and a solution?</p>
  <p>jsfiddle.net/uc21q65e</p>
  <p>Thx</p>
  <p>interact.js version: 1.10.11</p>
  <p>Browser name and version: Firefox 94</p>
  <p>Operating System: Mac OS, Windows 10</p>