1. Install ezstudio;

2. Access it from ezplatformUI.
You should be on the default landing page.

3. Simply choose a content type, and try to create a content of it.
Upon calling the form to create a content, it shows briefly for some seconds, then it is suddenly overlapped by some gray area (a div) that covers everything:

<div style="transform: translateX(0px); opacity: 0;" id="yui_3_18_1_1_1447167622889_2967" class="ez-view-contenteditview">

According to Piotr Nalepa the view is rendered twice.